Avinash can run with a speed of 8 m//s against the frictional force of 10 N, and Kapli can move with a speed of 3 m//s against the frictional force of 25 N. Who is more powerful and why ?

Avinash is moving with the velocity 8ms^(-1) against the frictional force 10 N acting on him and Kapil is moving with the velocity 3ms^(-1) against the frictional force 25 N acting on him. Whos power would be more?

A train is moving towards East with a speed 20 m/s. A person is running on the roof of the train with a speed 3 m/s against the motion of train. Velocity of the person as seen by an observer on ground will be :

An elevator of total mass 1800 kg is moving up with a constant speed of 2m/s . A frictional force of 400 N acts on this motion. The direction of frictional force is cdots

Rajan exerts a force of 150 N in pulling a cart at a constant speed of 10 m s^(-1) .Calculate the power exerted.

A man exerts a force of 200N in pulling a cart at a constant speed of 16m//s Calculate the power spent by the man.

If a force of 0.98 N is applied to a mass of 0.25 kg (g = 9.8m//s^2) the coefficient of friction is

A Car of mass 1000 kg is moving with a velocity of 10 m // s under the action of a forward force of 1000 N and retarding force of 500 N due to friction. Wath be its velocity after 5 seconds ?