A car is traveling at 41.0 km/h on a flat highway. (a) If the coefficient of friction between road and tires on a rainy day is 0.111, what is the minimum distance in which the car will stop? (b) What is the stopping distance when the surface is dry and the coefficient of friction is 0.611?

A 2000 kg trailer truck travels down a road with slope 0.2 with a speed of 20 kph. If the truck driver pressed the brakes hard, determine how far the tires skid on the road if the coefficient of kinetic friction between the wheels and the road is 0.6.

A 10.0 kg object is pushed across a floor with a horizontal force of 70.0 N. If the coefficient of kinetic friction between the object and the floor is 0.100, what is its acceleration?

A 1250 kg boat is traveling at 90 km/h when its engine is shut off. The magnitude of the frictional force fk between boat and water is proportional to the speed v of the boat. Thus, fk = 80v, where v is in meters per second and fk (the magnitude of the frictional force) is in newtons. Find the time required for the boat to slow down to 45 km/h.

A man is driving his car with speed 47.0 mi/h on a horizontal stretch of road. When the road is wet, the coefficient of static friction between the road and the tires is 0.102. Find the minimum stopping distance (in m). When the road is dry, ?s= 0.603.  Find the minimum stopping distance (in m).

Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a roof with a slope of 34°. (a) What is the minimum value of the coefficient of static friction that will keep the snow from sliding down? (b) As the snow begins to melt,the coefficient of static friction decreases and the snow finally slips. Assuming that the distance from the chunk to the edge of the roof is 4.0 m and the coefficient of kinetic friction is 0.10, calculate the speed of the snow chunk when it slides off the roof. (c) If the roof edge is 10.0 m above ground, estimate the speed of the snow when it hits the ground.

a sled, with a mass=6.50kg, is sliding down a snow-covered hill that has a slope of 45.0 degrees. there is an applied force pushing down on the sled perpendicular to the incline of 80.4N. the coefficient of kinetic friction between the sled and the snow is .100. determine the acceleration of the sled down the slope. report your answer is meters per second squared, but only enter the numerical value.

A sled is traveling 4.00m/s along a horizontal stretch of snow. The coefficient of kinetic friction is k = 0.0500.   How far does the sled go before stopping?

A Box is placed on a 40° slope with a coefficient of friction of 0.30. The box starts approximately at 6.0m off the ground. It slides onto a horizontal part with a coefficient of 0.45. How far does it slide along this part?

A transport plane takes off from a level landing field with two gliders in tow, one behind the other. The mass of each glider is 700 kg, and the total resistance (air drag plus friction with the runway) on each may be assumed constant and equal to 4300 N. The tension in the towrope between the transport plane and the first glider is not to exceed 12000 N. If a speed of 40 m/s is required for takeoff, what minimum length of runway is needed?