A 3.5 kg block is pushed along a horizontal floor by a force F of magnitude 20 N at an angle of 400 below the horizontal. The coefficient of kinetic friction between the block and the floor is 0.25. The block’s acceleration is:

A book slides across a level, carpeted floor with an initial speed of 3.85 m/s and comes to rest after 3.75 m. Calculate the coefficient of kinetic friction μ between the book and the carpet. Assume the only forces acting on the book are friction, weight. and the normal force. H =

You are pulling your luggage in an air port for an international flight. You know not to pack too much else they charge you extra fees so you weighted your luggage at home to be 22.0 kg. You exert a pull of 46 N in magnitude and at 24 degrees above the horizontal to ensure you can walk at a constant speed on the carpeted floor. What is the coefficient of friction between the caster wheels and the carpet?

A block with a mass of 2.0 kg is released from rest and slides down a long, smooth ramp. The incline of the ramp is 41.0 degrees, and the coefficient of kinetic friction is  ?=0.259 How far will the block travel in 1.001.00 s, assuming it does not reach the end of the ramp?

Blocks A and B each have a mass m = 15 kg. The coefficient of static friction between A and B is μg = 0.28. The angle shown is 0 = 47°. Neglect any friction between B and C. A B P C Determine the largest horizontal force P that can be applied so that A will not slip on B. P= number (rtol=0.05, atol=1e-08) N

What is the cofficient of static friction between the pavement and the car tires?

Question 8. A 5.41-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.369. Determine the kinetic frictional force that acts on the box when the elevator is (a) stationary, (b) accelerating upward with an acceleration whose magnitude is 2.64 m/s², and (c) accelerating downward with an acceleration whose magnitude is 2.64 m/s².Ans: 19.56 N; 24.83 N; 14.29 N

A warehouse worker exerts a constant horizontal force of magnitude 86.0 N on a 40.0 kg box that is initially at rest on the horizontal floor of the warehouse. When the box has moved a distance of 1.60 m, its speed is 1.00 m/s. What is the coefficient of kinetic friction between the box and the floor?