Car on IcePro Problems > Physics > Motion and Forces > Linear Motion > Force > Friction > Kinetic Friction
Car on Ice
A 2500kg car traveling 14.0 m/s on an icy, level road approaches an intersection. The brakes lock and the car skids 25.0m. What is the coefficient of friction between the tires and the surface?
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Willy (m = 15 kg) and Jill (m = 10 kg) are riding on a sled (m = 5 kg). I am pulling them just hard enough to give them a constant speed of 5 m/s on a horizontal surface. The coefficient of friction between the sled and the snow is 0.08. Willy jumps out of the sled, and I continue pulling with the same force. How long will it take Jill and the sled to travel 50 more meters after Willy jumps out of the sled?
A rope attached to a 35.0 kg box makes an angle of 25.0 degrees with the horizontal. A force of 185N is applied to the rope, and the coefficient of kinetic friction between the box and floor is .450. Find the acceleration of the box.
A 100kg block is pulled at a constant speed along a horizontal surface. The horizontal component of the force is 400N, while the vertical component of the force is 300N up. Find the kinetic friction, normal force and coefficient of friction.