Question

A force cannot be seen but the effect of the force can be felt.
(a) True
(b) False

Answer 1

Hint : Force is the rate of change of momentum by Newton’s first law and we know that force is not any physical object so it cannot be seen but effect of force can be felt by change in momentum.

Complete Step By Step Answer:
Force is the rate of change of momentum by Newton’s first law and we know that force is not any physical object so it cannot be seen but the effect of force can be felt by change in momentum.
A brick is thrown from a certain height in a vertical manner which means its directly falling towards ground. This happens because of gravity. Gravity is nothing but a force this gravitational force attracts the bricks towards ground.
Here the gravitational force cannot be seen but the change in momentum of brick can be felt. When it falls on the ground.
A force cannot be seen but the effect of the force can be felt.
Hence the statement is true.

Note :
When any object is thrown in Air, then gravitational force is acting on it. That’s why an object falls on ground or comes down; this force of acting cannot be seen but it can be felt.