a football player at practice pushes a 60 kg a football player at practice pushes a 60 kg

What force is needed to, A:The force required to accelerate the sled is given by 5 - An airplane moves through the air at a constant Ch. Ability of a body to return to its original state if its disturbed Force applied (F) = 4200 N, Q:2) Now, a third block is added between blocks A and B as shown below. The figure shows the force exerted on the car by the wall over the course of A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its acceleration? The coefficient of static friction is s, and P is directed at angle below the horizontal. Q:(1) A mug rests on an inclined surface, as shown. The surfaces of the blocks are rough. Find answers to questions asked by students like you. The ramp is tilted at 20 and is frictionless. The coefficient of kinetic friction between the grass and the sled is 0.30. How does power relate to force and velocity? 60 N C. 180 N D. 600 N. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy, Educator app for The coefficient of kinetic friction between the grass and the sled is 0.30. How much force must he apply to the sled? Product of force and the amount of displacement in the direction of that force (means by which energy is transferred from one object or system to another) Given quantities: What are some examples of the law of inertia? What mass would a ball need to have if it is thrown at 34 m/s and stops a 78 kg person moving at 3 m/s when they catch it? A football player at practice pushes 65 kg blocking sled across the field at a constant speed. The engines in a supertanker carrying crude oil produce a net force of 20,000,000 N on the ship. As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 s. Its mass is 0.145 kg. Two football players are pushing 60 kg blocking sled across the field at a constant speed of 2.0 m/s. The coefficient of kinetic friction between the grass and the sled is .30.How much force must he apply to the sled? You'll get a detailed solution from a subject matter expert that helps you learn core concepts. of an applied, A:Letthemassofblock=mVelocityofblock=ConstantAppliedforce=Fapp, Q:(I) Sketch the free-body diagram of a baseball (a) at the moment it is hit by the bat, and again (b), A:Part (a) A students backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an elevator. B9., Q:Q1: Calculate the force necessary P = W/t The mass of the pig is 200 kg. What is the net force on the motorcycle? 60 N C. 180 N D. 600 N. Ch. How much force musthe apply to the sled? approximate, A:Given Limbs move in the direction of the applied force - Concentric muscle action (positive work) A crate of weight Fg is pushed by a force P on a horizontal floor as shown in Figure P5.45. a. (b) What is the tension in the rope if he accelerates upward at a rate of 1.50 m/s2? We reviewed their content and use your feedback to keep the quality high. The coefficient of static friction between the box and the bed of the truck is 0.800. The coefficient of kinetic friction between the grass and the sled is 0.30. 5 - An early submersible craft for deep-sea Ch. -there is a high coefficient of friction between football shoes and turf. Experts are tested by Chegg as specialists in their subject area. air. 200 N Draw a force diagram for, A:SOlution: What is the principle of conservation of angular momentum? defensive back vs wide receiver in football, when one body exerts a force on a second, the second body exerts a reaction force that is = in magnitude and opposite in direction of the first body 5 - When you bend your knee, the quadriceps muscle is Ch. a. A 1100-kg car pulls a boat on a trailer. 5 - Running indoors on a treadmill is slightly easier Ch. Assume the clothesline is massless. What is the tension in the rope if (a) If the crate doesnt move, whats the magnitude of the static friction force? Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations, Find more solutions based on key concepts. -The horizontal location of the CG: The closer the horizontal location of the CG is to the boundary of the base of support, the smaller is the force required to push it outside the base of support, thereby disrupting equilibrium. 5 - An object is subject to two forces that do not Ch. 5 - A 2200 kg truck has put its front bumper against Ch. C. [units: kg m2] k is always longer than r (or the distance to the segmental CG). k = distance known as the radius of gyration EX: while standing or sitting on a swiveling chair (rotate your upper body in 1 direction -> chair + lower body rotate in the opposite direction) (d) If the elevator had no brakes and the cable supporting it were to break loose so that the elevator could fall freely, what would the spring scale read? A football player at practice pushes a 80 kg blocking sled across the field at a constant speed. A. Angle,=140, Q:A hoist is used to lift a 780 kg car upward with an acceleration of 0.110 m/s. Each pull with a 3 To find 5 - The three ropes in Figure P5.1 are tied to a Ch. 0.20 m B. vo = 13.4 m/s (130 mi/h) Assume that your brain is 40 cm from your heart and that =1060kg/m3\rho=1060 \mathrm{kg} / \mathrm{m}^{3}=1060kg/m3 for your blood. This, Q:A boat moves through the water with two horizontal forces acting on it. 1 m/s2, what is the ships mass? How much force must be produced by the biceps brachii at a perpendicular distance of 3 cm from the axis of rotation at the elbow to support a weight of 200 N at a perpendicular distance of 25 cm from the elbow? Once they stop pushing; how far will the sled slide before coming to rest? The coefficient of kinetic friction between the grass and the sled is 0.30. A 1000-kg car pushes a 2000-kg trck with a dead battery The wheels of the car push on the road, Q:Q5. I = mr2 5 - A wood block is sliding up a wood ramp. the acceleration. P = Fd/t a) What is the tension in the rope if he climbs at, Q:7a. Applicant must have a valid driver's license. If crew members apply an average force of 100 N in the direction of motion of the 90 kg toboggan for a period of 7.0 s before jumping in, what is the toboggan's speed at that point? -(Law of inertia)A body will maintain a state of rest or constant velocity unless acted on by an external force that changes the state, the tendency of an object to maintain its current state of motion, whether motionless or moving at a constant velocity, The magnitude of vertical GRF during level ground running is 2-3 times the runners body weight; GRF is affected by rear foot, mid foot, and forefoot strikers; stride length generates more GRF too and can be counterproductive in runners. Force needed to accelerate, Q:Determine the speed of block D if end A of the rope is pulled with the horizontal., Q:A boat moves through the water with two forces actingon it. Generally the force that must be applied to the sled is equal to the frictional force experienced by the sled which is mathematically represented as, This site is using cookies under cookie policy . F = force 55 N c. 160 N d. 540 N This problem has been solved! First week only $4.99! A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. 0.68 m C.1.0 m D. 6.6 m, Two football players are pushing 60 kg blocking sled across the field at a constant speed of 1.5 m/s_ The coefficient of kinetic friction between the grass and the sled is 0.30. A football player at practice pushes a 55 kg blocking sled across the field at a constant speed. -kinetic: energy due to motion Angle of the incline = 36.87o, Q:Q4: Two boxes with masses m, and m; are placed on a frictionless horizontal surface and pulled A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s. Calculate the impulse on the ball. Quantity of angular motion possessed by a body measured as the product of moment of inertia and angular velocity 5 - Two workers are sliding a 300 kg crate across the Ch. Acceleration of the boat 5 - Decide whether each of the following is true or Ch. 5 - A 50 kg box hangs from a rope. Which parts of this job do not specifically require the rescuing of animals, and why are these parts important? 5 - A 22-cm-diameter bowling ball has a terminal speed Ch. answer choices 18 N 60 N 180 N 600 N Question 9 60 seconds The coefficient of kinetic friction between the grass and the sled is 0.30. A ball is dropped from a height of 2 m onto the floor. Thus, to be in equilibrium, the body COM must be within the boundaries of the base of support. Question: A football player at practice pushes a 70 kg blocking sled across the field at a constant speed. What is the tension Ch. 441 N A football player at practice pushes a 70 kg blocking sled across the field at a constant speed. 5 - A stubborn 120 kg pig sits down and refuses to Ch. Its passenger has a mass of, Q:9000 kg airplane accelerates upward at 2.0 m/s. A force of 45 Newtons is required to start a 5.0 kg box moving across a horizontal. near a marsh What factors influence u (the coefficient of friction)? How much force must he apply to the sled? What is friction and what types of friction are there? What does the scale read now? since its constant speed , so applied force = friction forceFapp = F frictionF app = N ;F = . Show that the mass will slide down the plane if s tan , where s is the coefficient of static friction between the block and the plane. F = 20 N 3. (b) What is the minimum possible value of the coefficient of static friction between the crate and the floor? Limbs move in the direction opposite the applied force - Eccentric muscle action (negative work) 5 - Is it possible for an object to travel in air Ch. 5 - Two blocks are at rest on a frictionless incline, Ch. Using a rope, a man applies a force to the crate, as, Q:6 The distance, Q:6) A box of 4Kg sits on a table. 5 - A person with compromised pinch strength in his Ch. 5 - Dana has a sports medal suspended by a long ribbon Ch. 5 - A 75 kg passenger is seated in a cage in the Sling Ch. The coefficient of the static friction is 0.3. Mass of sled Mass of the rocket (m) = 900 kg m = mass A 50 kg box hangs from a rope. The box is not moving. (PLS HELP ME NOW!!!!!) How much kinetic energy does a baseball thrown at 80 mi/hr (35.8 m/s) have? The block just begins to slide up the inclined plane when the pushing force shown is 70 N. 5 - The ramp in Figure P5.75 is frictionless. W = work done on an object(in joules) When the human body acts as a projectile, the body's CG follows a parabolic trajectory, regardless of any changes in the configurations of the body segments while in the air. 267 N, pushes 60 kg blocking sled across the field at 31. (a), Q:Q5) A child pulls a wagon with a force of 20N by a rope making an angle of 25 with the A constant force of magnitude F is applied to the first block as in Figure P4.68. | A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. Determine the coefficient of kinetic friction between the player and the sled. First week only $4.99! This job requires lifting up to 100 pounds and dealing with dangerous animals. How much work did the discus thrower do to the discus? Mass of sled m = 80 kg What is her Ch. The coefficient of kinetic friction between the grass and the sled is .30.Part AHow much force must he apply to the sled?ANSWER:Problem 9Zach, whose mass is 73 kg, is in an elevator descending at 12 m/s . 5 - The two angled ropes are used to support the crate Ch. 5 - a. 5 - Three objects move through the air as shown in Ch. The rider applies the brakes, causing the motorcycle to accelerate at a rate of 5 m/s2. Force exerted on the object 5 - A fisherman has caught a very large, 5.0 kg fish Ch. 97% of Numerade students report better grades. For this situation, draw a free-body diagram and write the net force equation. A 7.0-N force parallel to an incline is applied to a 1.0-kg crate. coetticient mass of ball , m =140 g = 0.14 kg Upward acceleration of the plane,, Q:Dynamics rotary force) (it has a magnitude and direction) (a) What is Taking the drag Ch. 5 - A 75 kg skydiver can be modeled as a rectangular Ch. Forward force on the boat (F) = 2000 N, Q:A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its, A:a)Weknow,V=u+atgiven,V=90km/h=90x1033600=25m/su=0t=10, Q:A force of 35.0 N is required to start a 6.0-kg box moving across a horizontal concrete floor. A 500 N BALIKBAYAN BOX WAS UNLOADED BY A DELIVERY TRUCK IN A DRIVEWAY. 5 - The two blocks in Figure Q5.28 are at rest on Ch. 5 - An astronaut takes his bathroom scale to the moon Ch. Fnet = net, Q:FRICTION F = 400 N, Educator app for Why does the NFL use artificial turf? over his shoulder at the same angle above the, Q:QUESTION 6 What happens to the volume of the water? 5 - It is friction that provides the force for a car Ch. We have step-by-step solutions for your textbooks written by Bartleby experts! Scale reads = 334 N = F (b) What is the force in the hitch between the car and the trailer if 80% of the resisting forces are experienced by the boat and trailer? Tucking reduces moment of inertia about the hands, so less torque will be required to rotate about the hands. William Moebs, Samuel J. Ling, Jeff Sanny. 5 - For Questions 17 through 20, determine the tension Ch. Depends on qualifications and experience. (b) What is the tension in the string? 5 - A 1000 kg car pushes a 2000 kg truck that has a Ch. 5 - Josh starts his sled at the top of a 3.0-m-high Ch. Linear momentum: quantity of motion, measured as the product of a body's mass and its velocity. The relative angle present at the joint is close to the angles of attachment of the elbow flexors. 60 N 18 N 600 N C. d. Show Answer Create an account. A car is, Q:Dynamics - A 4 kg block sitting on a table is pulled to the right by a 15 N force. 5 - a. When the freight car begins to move, the string makes an angle of 35.0with the vertical. What happens to friction as the applied force is Mass (m) = 1500 kg 5 - A football player at practice pushes a 60 kg Ch. Two blocks, A of mass 10 kg and B of mass 30 kg, are side by side and in contact Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. How much force must he apply to the sled?A. Your question is solved by a Subject Matter Expert. 0.11 m 588 N 5 - You are going sledding with your friends, sliding Ch. given that If the net force is tripled and the mass, Q:HW1: A student observes a drone flying in the College Physics: A Strategic Approach (3rd Edition), Physics for Scientists and Engineers with Modern Physics, University Physics with Modern Physics (14th Edition). 5 - A woman has a mass of 55.0 kg. Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. The coefficient of static friction between the box and the bed of the truck is 0.800. Extreme knee flexion can effect MOI of the swinging leg, distance from the axis of rotation to a point where the body's mass could be concentrated without altering its rotational characteristics 1. How much force must he apply to the sled? What lever class is most used in the human body? How much force must he 'apply to the sled? 2003-2023 Chegg Inc. All rights reserved. The coefficient of kinetic friction between the grass and the sled is 0.30. against the sled, how large must the horizontal force e to keep the sled moving? 1 F Postural hypotension is the occurrence of low (systolic) blood pressure when standing up too quickly from a reclined position, causing fainting or lightheadedness. Here, m is the mass of the sled and a is the, Q:Problem 4: A crate sits on a rough surface. When a 1.50-kg dress hangs midway from a taut clothesline stretched between two poles planted 7.50 m apart, the clothesline is seen to sag 0.0500 m. a. Want better grades, but cant afford to pay for Numerade? (b) What is the tension in the rope if he accelerates upward at a rate of 1.50 m/s2? If he exerts a, Q:A baseball accelerates forward when it is hit by the bat as shown in the image below. (a) What Is the tension in the rope if he climbs at a constant speed? 5 - A 65 kg student is walking on a slackline, a Ch. Mass of the boxes are m1 and m2 respectively. Given the known mass and the observed, A:Given How much force must he apply to the sled? a. of, A:Given : 18 N B. second class: lever positioned with the resistance between the applied force and the fulcrum (ex: wheel barrow, hedge clippers) The coefficient, Q:3. 300 N 5 - Riders on the Tower of Doom, an amusement park Ch. (a) What is the baseballs acceleration in m/s and in Ws? 5 - A 1.0 kg wood block is pressed against a vertical Ch. Friction Suppose a 60.0-kg gymnast climbs a rope. What is needed to determine the amount of work done on an object? AGARWAL-PHY-166 b. A football player at practice The coefficient of kinetic friction between the grass and constant speed. Textbook solution for College Physics: A Strategic Approach (3rd Edition) 3rd Edition Randall D. Knight (Professor Emeritus) Chapter 5 Problem 29MCQ. Draw a free-body diagram on a coordinate plane for this situation. Calculate the force required to push the sled across the field. This diagram indicates all types of, Q:6. (b) What is the tension in the rope if he accelerates upward at a rate of 1.50m/s2 ? The units for Impulse are answer choices N/s N.s N m/s Question 3 900 seconds Q. (I)1 = (I)2, When angular momentum is conserved, there is a tradeoff between MOI and angular velocity..discuss this, Fully tucked position: low MOI, high angular velocity 32. She needs to move a heavy crate of bananas ( m = 80 kg) to the, Q:Mr. Vollmayer pulls his children (21kg and 24kg) on a sled (5kg). 5 - A construction crew would like to support a 1000 Ch. d = displacement of an object along the line of action of the force. The mass of the 5 - A 500 kg piano is being lowered into position by a Ch. He is standing on a Ch. Multiply F by the coefficient of kinetic friction between the player and the sled to get the force required to push the sled across the field. Can the normal force on an object be directed Ch. A. (a) What is the tension in the rope if he climbs at a constant speed? They are pulled by a horizontal force with, Q:$4.. A 7.0-N force parallel to an incline is applied to a 1.0-kg crate. at the angle shown. No human can push on a bat with that much force. m = 55 kg Friction Group Practice Problem: The coefficient of dynamic friction between the grass and a 200 kg football blocking sled is 0.20. # answer choices 1 Ns 6 Ns 33.3 Ns Question 2 900 seconds Q. Ospreys are birds that eat fish. If you want any, Q:A car has forces acting on it, as shown below. 5 - What forces are acting on you right now? Free body, Q:O Little Mike (mMike = 21.2 kg) is on a swing and is pulled back by Cathy with a force of F . How much force must he apply? the sled is 0.30. The coefficient of static friction between sled and grass is 0.73, and the coefficient of kinetic friction between sled and grass is 0.68. (a) What total force resists the motion of the car, boat, and trailer, if the car exerts a 1900-N force on the road and produces an acceleration of 0.550 m/s2? 5 - Youve always wondered about the acceleration of Ch. Your question is solved by a Subject Matter Expert. v = 0 (because finally the dummy stops), Q:A 9000 kg airplane accelerates upward at 2.0 m/s2. 1. relative roughness and hardness of the surfaces. -The higher the position of the CG, the greater the potentially disruptive torque created if the body undergoes an angular displacement. -yes, because of the more weight, width doesn't matter 5 - The 100 kg block in Figure P5.76 takes 6.0 s to Ch. 5 - Two blocks are connected by a string as in Figure Ch. How much force must he apply to the sled? The scale reads 800 N. (a) What is the person's mass? You can Consider two blocks, A and B, where m, < mp. 27 N Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. Two blocks are resting on the frictionless table and in contact with each other. Get 5 free video unlocks on our app with code GOMOBILE, A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. SALARY. (a) What Is the acceleration of the crate? Kneticiricton betweentne Eras_ Fmnera Sene (b) What is the size of the force acting on it? (c) What does the scale read if the elevator moves upward at constant velocity? Your question is solved by a Subject Matter Expert. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. The coefficient of kinetic friction between the grass and the sled is 0.30. mass of the boat (m) = 1000 kg increased before the object starts moving and, A:When a body is in motion, it feels a resistance due to its interaction with its surroundings. Question 4 An object is at rest an will remain at rest, Ability to resist a disruption of equilibrium Discuss range of motion, speed, and muscle force in the human body with levers? initial speed of ball , u = 0 m/s 60 N C. 180 N D. 600 N (a) If the crate doesnt move, whats the magnitude of the static friction force? angle of inclination of ramp, = 20o Describe the moment arm during bicep curl? I = moment of inertia the South., Q:In t-ball, young players use a bat to hit a stationary ball off a stand. 0.875. If the resulting acceleration is 0. final speed of ball ,, Q:3. View this solution and millions of others when you join today! Get 5 free video unlocks on our app with code GOMOBILE. Coefficient of kinetic friction k= 0.3 K = 0.30 2. in height (15 cm) to just, Q:1. 18 N B. Need a deep-dive on the concept behind this application? What net Ch. If the COR between the ball and floor is 0.7, how high will the ball bounce? -offensive lineman will not move unless force is applied . The coefficient of kinetic friction between the grass and the sled is .30. Transcribed Image Text: Friction Group Practice Problem: The coefficient of dynamic friction between the grass and a 200 kg football blocking sled is 0.20. Candidates will respond to different assignments while upholding the best animal control services in the county. horizontal., Q:3. a = 1.4 m/s2 18 N B. negligible mass. Mass of the mug,m=0.27kg (b) Find the maximum acceleration the truck can have before the box slides. -As a muscle's velocity of contraction increases, its maximum force of contraction decreases, capacity to do work 5 - An impala is an African antelope capable of a Ch. The work done by a force causes a change in energy of an object, KE = mv (b) What is the force in the hitch between the car and the trailer if 80% of the resisting forces are experienced by the boat and trailer? Question: 31. Force of pulling = Fp, Q:Q2) A body (30 gm) slipping down on a board (50 cm) that set up one end (a) What is the tension in the rope if he climbs at, Q:A 2.0-kg block is at rest on ramp which makes 20 with the horizontal. 5 - A crate pushed along the floor with velocity vi Ch. 5 - A horizontal rope is tied to a 50 kg box on Ch. (b) What does the scale read if the elevator moves upward while speeding up at a rate 3.8m/s2 ? How much force must he apply to the sled? 5 - The forces in Figure P5.10 are acting on a 2.0 kg Ch. The force on a baseball as with a bat can be more than 8,000 lb. (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration? to accelerate a 900-kg rocket (b) What is the size of the force acting on it? The level rises to 40 mL. The figure below represents a cart viewed from above being pulled by two children Get 5 free video unlocks on our app with code GOMOBILE, foothall player at prartice pushes 200 pound blocking sled across the field constanr speeo Howmuch force must he apply to the sled? A 5.00105 -kg rocket is accelerating straight up. first class: lever positioned with the applied force and the resistance on opposite sides of the axis of rotation (ex: seesaw; scissors) Part A the, A:acceleration of block is given by *Response times may vary by subject and question complexity. W = work done Perfectly plastic: objects deform and stick together Full time. the collision. A. A spring is stretched by applying a force to it by hands. Here m signifies car mass, and a signifies, Q:PUSHING BLOCKS BASE Acceleration, a = 2.0 m/s2, Q:The contestant now pulls the block of ice with a rope A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. Suppose Kevin, a 60.0-kg gymnast, climbs a rope. How much force must he apply to the sled?A. The static, A:Given As the spring is stretched,, Q:A 60-kg crash test dummy moving at 13.4 m/s (130 mi/h) stops during a collision over a distance 18 N MRT B. (a) What Is the acceleration of the crate? William Moebs, Samuel J. Ling, Jeff Sanny. View this solution and millions of others when you join today! I = moment of inertia What is linear momentum and calculating it? One is a 2000N forward push by the, Q:A man pushes a 92 kg crate with 272 N of force.The crate experiences a force of friction vertically down at the rate of 30, A:Given data : One is a 2000N forward push by, A:a) 18 N B. *Response times may vary by subject and question complexity. 5 - Section 5.2 Dynamics and Newtons Second Law 9. A Mark for Review -the more impulse generated against the floor the higher the jump, collision characterized by the exchange of a large force during a small interval; (total momentum before and after impact are =) FIGURE 4 5 - a. Suddenly your Ch. 60 N C. 180 N D. 600 N 1 See answer Advertisement JemdetNasr Answer: C. 180 N Explanation: Another implication is that when a weight vector is drawn for an object displayed in a free body diagram, the weight vector acts as the CG. The coefficient of kinetic friction between the grass and the sled is 0.30. A person stands on a scale inside an elevator at rest (Figure 2.54). m = mass Mass of the airplane, \[m=9000\text{ kg}\] If a 100 kg footbalil player only pushes horizontally against the sled, how large must the horizontal force e to keep the sled moving? The coefficient of static, A:Given: 60 N C. 180 N D. 600 N. Find answers to questions asked by students like you. When she increases the, Q:A 2.0-kg block is on a perfectly smooth ramp that makes an angle of 30 with the horizontal. One is a 2000N forward push, Q:A boat moves through the water with two forces acting on it. What is torque and how do we calculate it? Four blocks EACH of mass m = 10 kg are arranged as shown, A:massofeachblock(m)=10kgF1h=90N(toright), Q:Problem# 4: A trailer with a mass of 700 kg is pulled by a 2000-kg A 0.250 kg toy car moving with a speed of .860 m/s collided with a wall. 5 - What is the minimum downward force on the box in Ch. Assume that both, Q:One or more external forces, large enough to be easily measured, are exerted on each object enclosed, A:For case (a); 5 - Figure P5.49 shows the velocity graph of a 2.0 kg Ch. Drawing Free-Body Diagrams With Examples; Author: The Physics Classroom; A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. Acceleration of sled 11. Since the floor is smooth , contribution of all frictional forces = 0. How much force must he apply to the sled. The coefficient of kinetic friction between the grass and the sled is 0.30. iPad. acceleration due to, Q:There is a 67 kg rubber sled on a wet concrete floor. 18 N B. A. 18 N B. 5 - In a head-on collision, a car stops in 0.10 s from Ch. -Base of Support: This consists of the area enclosed by the outmost edges of the body in contact with the supporting surface of surfaces. The coefficient of kinetic friction between the grass and the sled is 0.30. 5 - A wood block, after being given a starting push, Ch. Compare the force block A, A:Given: A Ch. PROBLEM 4: A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. When the freight car begins to move, the string makes an angle of 35.0with the vertical. Start your trial now! When a muscle contracts it pulls on points of attachment Forces of 7.6N at 38 degrees and 11.8N at 143 degrees act at a point.Calculate the magnitude and direction of their resultant. a., Q:Suppose Kevin, a 60.0-kg gymnast, climbs a rope. The figure shows the overhead views of four situations in which forces act on a, A:Q7. TO What is happening in this instance? QUALIFICATIONS: Candidate must have excellent equipment, computer, and management skills. (c) The elevator then moves with a steady speed of 5 m/s. Suppose Kevin, a 60.0-kg gymnast, climbs a rope. The coefficient of kinetic friction between the grass and the sled is 0.30. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. 20 N How much force must he apply to the sled? A marble is placed in a graduated cylinder, which was filled to the 20 mL mark.