Question

important questionon force and law of motion class 9th
​

Answer 1

Explanation:

There are three types of laws of motion

The second law states

"The rate of change of momentum is directly proportional to the external unbalanced force in the direction of force "

the second law helps us to measure the force..

Answer 2

Answer:

Force and Laws of Motion Class 9 Extra Questions Short Answer Questions—II

The gravitational force exerted by the earth which pulls the stone downwards.

The force of reaction exerted by the ground on the stone vertically upwards.

The force of pushing exerted by the boy.

The force of friction exerted by the stone.