Work Energy

Power is a:

Which of these is used to store electrical energy in the form of chemical energy?

Calculate the kinetic energy of a ball of mass 0.5 kg moving at a speed of 4 m/s.

When a force acts at an angle of 180 degrees to displacement, the work done is:

The energy of the wind is used to rotate the blades of a windmill. This is an example of converting:

One Joule is equal to how many ergs?

The work-energy theorem states that work done on a body is equal to change in its:

A man of 60 kg climbs up 20 m. If he takes 10 seconds, what is his power? (g = 10 m/s^2)

Potential energy (PE) formula is:

When the speed of a moving body is doubled, its momentum is:

Which of these is the most common form of energy released during friction?

A spring is stretched by 2 cm. If the spring constant is 100 N/m, the energy stored is:

Dimensions of work are:

Energy can be defined as the capacity to exert:

If a man pushes a wall and the wall does not move, the work done is:

Which of these is a renewable source of energy?

A car of mass 1000 kg is moving with a velocity of 10 m/s. Its kinetic energy is:

A person holds a book of mass 1 kg in his hand for 10 minutes at a height of 1 m. The work done is:

If a force F = 20 N is applied at an angle of 90 degrees to the displacement d = 5 m, the work done is:

Power is equal to: