Work Energy

Mechanical energy is the sum of:

Water stored in a dam possesses:

When velocity of a body is halved, its KE becomes:

Unit of energy in the FPS system is:

A body of mass 1 kg is at a height of 1 m. Its PE is (g=10 m/s^2):

Which of the following does not possess kinetic energy?

Work done by a centripetal force is always:

The energy possessed by wind is:

Solar panels convert light energy into:

An object of mass 5 kg is raised through a height of 10 m. What is the work done? (take g=9.8 m/s^2)

How many Joules are there in 1 kWh?

A body of mass 2 kg is thrown upward with a velocity of 10 m/s. Its KE at the time of projection is:

If the momentum of a body is doubled, its kinetic energy becomes:

A force of 5 N acts on a body and the body moves 10 m at an angle of 60 degrees to the direction of force. The work done is:

The power of an engine which can lift 200 kg of water through 50 m in 10 seconds is (g=10 m/s^2):

If a boy of mass 40 kg runs up a staircase of 20 steps, each 15 cm high, in 10 s, his power is (g=10 m/s^2):

A car is moving with a constant speed of 20 m/s. The engine exerts a force of 500 N. The power of the engine is:

Two bodies of masses 1 kg and 4 kg have the same kinetic energy. The ratio of their linear momenta is:

A bullet of mass 10g is fired with a velocity of 400 m/s. What is its KE?

The work done by a person in lifting a load of 20 kg to a height of 2 m is: (g=10)