An object of mass 12kg is placed at a certain height from the ground. If the potential energy of the object is 480J, find the height from the ground of an object?

Which of the following can do more work?

A. A raised hammer

B. A bullet fired by the gun

C. A moving stone

D. A rotating wheel

Mechanical energy is?

A. Energy released by a moving object

B. Energy emitted during mechanical work

C. The sum of the kinetic energy and potential energy of an object

D. Equal to the rate of work done

Work present if there is-

A. Force

B. Energy

C. Friction

D. Power

A compressed spring possesses more energy than a spring of normal length because the compressed spring has-

A. Chemical energy

B. Potential energy

C. Kinetic energy

D. Heat energy