A bicyclist travels in a circle of radius 25.0 m at a constant speed of 9.00 m/s.The bicycle–rider mass is 85.0 kg. Calculate the magnitudes of (a) the force of friction on the bicycle from the road and (b) the net force on the bicycle from the road.

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 25.0° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 55.0 kg , and the coefficient of kinetic friction between the skis and the snow is 0.120. Find the magnitude of the force that the tow bar exerts on the skier.

A block accelerates down a ramp at an angle θ=32° with a friction coefficient of 0.15.  Determine the acceleration.

A car with a mass of 1.3x10° kg is skidding to a stop along a horizontal surface. The car decelerates from 33 m/s to rest in 3.9 seconds. Assuming negligible air resistance, determine the coefficient of friction between the car tires and the road surface.

A 5kg crate is simultaneously acted upon by a force of 60N acting to the right that is parallel to the surface, and a force of 10N acting to the left, which makes a 30 degree angle with the horizontal. If the coefficient of kinetic friction is 0.15, then the magnitude of the acceleration of the crate is about _____ m/s2.

An object of mass 50kg is pushed in the +x direction with a force of 40N flat along a horizontal surface causing a net acceleration of 0.15m/s2 in the +x direction.  What is the coefficient of kinetic friction between the surface and the object?

You must push a crate across a floor to a docking bay. The crate weighs 183 N. The coefficient of static friction between crate and floor is 0.500, and the coefficient of kinetic friction is 0.300. Your force on the crate is directed horizontally. (a) What magnitude of your push puts the crate on the verge of sliding? (b) With what magnitude must you then push to keep the crate moving at a constant velocity? (c) If, instead, you then push with the same magnitude as the answer to (a), what is the magnitude of the crate's acceleration? (a) Number i (b) Number (c) Number i Units Units Units

A small vochito of mass 607 kg breaks down as it climbs a hill with an angle of inclination of 17° hel. coefficient of friction between the car and the surface is 0.75. What is the magnitude of its acceleration as it moves down the ramp?

A student pushes a 20kg desk across the floor to the right with a force of 400 N. The coefficient of kinetic friction between the floor and the desk is equal to 0.21.  Calculate the acceleration of the desk.

A rope is attached to Box A, and it is pulled on a rough surface due east with friction. The mass of Box A is 50 kg, and the tension force applied to the box is 100 N due east. If Box A is pulled by the tension force for 4.0 s, and the velocity changes from 0.1 m/s due east to 0.65 m/s due east during the time Box A is pulled, answer the following questions.  (a) What is the acceleration of Box A during the time it is pulled?  (b) What is the change in kinetic energy of Box A during the time it is pulled?  (c) What is the net work done on Box A by the tension force and the frictional force together? (d) What is the work done on Box A by the tension force alone?  (e) What is the work done on Box A by the frictional force alone?