Question

Name the form of mechanical energy, which is put to use for doing work.
A. Kinetic energy
B. Potential energy
C. Heat energy
D. Electric energy

Answer 1

Hint: A form of energy which is due to the motion and the position of the object are called mechanical energy. All living things and the machines possess mechanical energy as they have motion and position. Objects that possess mechanical energy have the ability to do work.

Complete step by step solution:
Option (A)
Kinetic energy is a form of energy that an object possesses due to its motion. It is defined as the work required by the body of given mass to accelerate from rest to its static velocity and having gained the energy due to acceleration; the body maintains kinetic energy until its speed changes.

Option (B)
Potential energy is the energy that is stored in an object due to its position relative to other objects. It is opposite to the kinetic energy this energy is because the object is at rest relative to the other objects and they store energy and are ready to be pushed.

Option (C)
Heat energy is due to the movement of tiny particles such as atoms, molecules or ions in solid, liquid and gases. Heat energy can be transferred from one body to another when they possess a temperature difference.

Option (D)
Electric energy is a form of energy due to the flow of electrons from place to place. The movement of charged particles through a wire or medium is called electricity. Electric energy is derived from electric potential energy.

As kinetic energy is the virtue of its motion; hence it becomes mechanical energy as there must be some movement or velocity for the existence of the kinetic energy hence Option (A) is correct.

Note: Mechanical energy is the sum of potential energy and kinetic energy. Mechanical energy enables the object to apply force to another object to cause a displacement.