Question

Pick the odd one out. Give a scientific reason for your answer.

• A. Kinetic energy
• B. mass of the object
• C. speed of the object
• D. gravitational force

Answer 1

The correct option is D

gravitational force

Kinetic Energy:

1. The energy possessed by an object because of its motion is called kinetic energy.
2. The word ‘kinetic’ is derived from the Greek word kinema meaning movement.
3. A flying airplane, a speeding train, or even a rolling ball all are examples of kinetic energy.

Expression for kinetic energy:

1. If a body of mass m is moving with velocity v, its kinetic energy is expressed as follows:
2. $Kineticenergy\left(KE\right)=\frac{1}{2}m{v}^2$
3. From the above expression, we can conclude that the kinetic energy of a moving body is directly proportional to its mass and the square of the velocity with which it moves.
4. Here, Out of all the given options, the gravitational force is the odd one out of all.
5. Because gravitational force is related to potential energy whereas all options are related to kinetic energy.

Hence, Option D(gravitational force) is correct.