Work and Energy...

How much work is done when a force of 2 N moves a body through a distance of 10 cm in the direction of force?

Work done on a body moving along a circular path is

In which of the following cases is work being done?

How much force is required to do 9600 J of work over a displacement of 25 m?

What must be the velocity (in ms^-1) of a moving body of mass 2 kg, which possess a kinetic energy of 16 J?

Two bodies A and B of equal mass are kept at height of h and 2 h respectively.What will be the ratio of their potential energies?

The kinetic energy acquired by a mass m in travelling a certain distance d, starting from rest, under action of a constant force is

A body of mass 20 g moving at 200 m/s passes through a plank and its velocity reduces to 100 m/s. While passing through the plank, what part of its K.E. is lost?

If a light and a heavy body have equal kinetic energy, which of them has a greater momentum?

If the K.E. of a particle increases by 4 times, then its momentum will