Work Energy

The energy of water stored in a dam is:

A body of mass 5 kg has a potential energy of 490 J. Its height from the ground is: (g = 9.8 m/s^2)

When we step on a gas pedal of a car, chemical energy of fuel is primarily converted into:

If a force of 10 N is applied on an object and the object does not move, the work done by the force is:

What is the work done by a person in carrying a 20 kg bag on his head while walking 50 m on a horizontal road?

In a torch cell, chemical energy is converted into:

A body is thrown vertically upwards. At the highest point, it has:

The work done against friction is always converted into:

If air resistance is neglected, the sum of PE and KE of a falling body is:

What is the gravitational potential energy of a 2 kg object at a height of 5 m from the earth? (g = 9.8 m/s^2)

Unit of energy in SI system is same as that of:

A motor of 100 W works for 1 minute. How much work does it do?

When a spring is stretched, the work done on it is stored as:

Work done is negative when:

The relationship between SI unit and CGS unit of work is:

If a stone of 1 kg is lifted to a height of 1 m, the work done is approximately:

The kinetic energy of a body depends on:

Which of these is a non-renewable source of energy?

A bullet of mass 10 g is fired with a velocity of 100 m/s. Its kinetic energy is:

When the displacement is in the same direction as the force, the work done is: