A 4.0-kg block has an initial velocity of 10 m/s on a level floor. Because of kinetic friction between the block and the floor, it takes 2.0 s for the block to come to rest. What is the coefficient of kinetic friction between the block and the floor?

A large box of mass M is moving on a horizontal floor at speed v0. A small box of mass m is sitting on top of the large box. The coefficient of static friction between the two boxes is μs and coefficient of kinetic friction between the large box and floor is μk. Find an expression for the shortest distance dmin in which the large box can stop without the small box slipping.

A robot with fancy wheels is trained to move in two directions simultaneously. The force in the forward direction is 10 N and the force in the horizontal direction is 8 N. If the robot starts from rest, has a mass of 75 kg and travels for 100 seconds, what is the magnitude of the robot's final displacement?

You are driving through the Ouachita Mountains at 12m/s. You see a maple-leaf oak (Quercus acerifolia) crossing the road and hit the brakes, 20m away. The coefficient of kinetic friction between your tires and the road is μ_k = 0.7. Will you strike this endangered broadleaf? Justify your answer with a calculation.Your final answer should be the distance you will travel before coming to a stop.

Marlou slides face first on level pavement, uniformly slowing his speed from 2.6 m/s to a stop for 1.2 s. If Marlou's mass is 41 kg, what was the magnitude of the frictional force on him? 110 N 870 N 180 N 89 N

A sled of mass 96 kg is being pushed up a slope with an applied force of 862 N. The slope is inclined with an angle of 36 degrees with respect to the horizontal. The coefficient of friction between the sled and the hill is 0.26. The acceleration of the crate (in m/s2) is:

A block of mass m is sitting on a block of mass M. The bottom block is sitting on a horizontal floor. The coefficient of static friction between the blocks is μs1, and the coefficient of static friction between the bottom block and the floor is μs2. What is the minimum pull force F on the bottom block so that the blocks begin to move? Given that the coefficient of kinetic friction between the bottom block and the floor is μk, what is the maximum pull force F so that there is no slipping between the blocks?

The figure shows three crates being pushed over a concrete floor by a horizontal force F of magnitude 695 N. The masses of the crates are m₁ = 31.5 kg, m₂ = 13.9 kg, and m3 = 20.2 kg. The coefficient of kinetic friction between the floor and each of the crates is 0.700. What is the magnitude F32 of the force on crate 3 from crate 2? m1 mq mg

Just like Louis, Maria left a book on the roof of her car before driving away. The mass of the book was 725 grams. The coefficient of static friction between the book and the roof was 0.28. The coefficient of kinetic friction between the book and the roof was 0.23. Maria started her car and drove forward on level ground with an acceleration of 3.6 m/s?. As Maria was driving away with that acceleration, what was the magnitude of the force of friction (in newtons) between the book and the roof of the car?

A tug-of-war match happens between Team Blue and Team Red. Each of Team Blue’s members has an average mass of 76 kg and exerts an average force of 1225 N horizontally. Each of Team Red’s members has an average mass of 78 kg and exerts an average force of 1275 N horizontally. What is the tension in the section of rope between the teams?