The speed of a body of mass 4 kg increases from `2m//s to 4 m//s` in certain time interval. Find the increase in the kinetic energy of the body.

The momentum of a body of mass 8 kg is 20 kg m/s. A force of 12 N acts on the body in the direction of motion for 4 s, the increase in the kinetic energy is

The kinetic energy of a body of mass 4 kg and momentum 6 N-s will be

If the momentum of a body of mass 10 kg is 20 kg m//s , find its velocity.

A body of mass 2 kg moves with a velocity of 5 m/s. Find its kinetic energy.

Solve the following examples / numerical problems: A body of mass 20 kg is at rest on the earth's surface. (i) Find its gravitational potential energy. (ii) Find the kinetic energy to be provided to the body to make it free from the gravitational influence of the earth. (g=9.8 m/s^2, R=6400km)

If the angular momentum of any rotating body increases by 200 %, then the increase in its kinetic energy is

Solve the following examples: (numerical problems) A body of mass 5 kg moves in a straight line with an acceleration of 2 m//s^2 ?. Find the change in the momentum of the body in 2 seconds.

A body of mass 5 kg moves with an acceleration of 4 m/s^(2) in a straight line. What will be the change in its momentum in 2 seconds?

The total energy of a body of mass2kg. performing S.H.M is 40 J. Find the speed while crossing the centre of the path.