Question

Define (i) Newton’s first law of motion (ii) second law of motion (iii) third law of motion

Answer 1

Newtons first law

Every body continues to be in same state of rest or uniform motion along a straight line unless compelled by an external force to act otherwise

Second law

Rate of change of momentum of a body is directly proportional to the applied force and it takes place in the direction of applied force

Third law

For every there is an equal and opposite reaction

Hope these helps u

Answer 2

Newton's first law of motion

Newton's first law of motion states that " every body continues in the same state of rest or in the same state of uniform motion " if it does not experience any other external force .

Example :

A car will move in the same speed if no brakes are applied and if no acceleration is done.

Second law of motion

The second law states that the rate of change of momentum is directly proportional to the applied force.

m ( v - u ) is directly proportional to F .

Hence F = m a

Third law of motion.

This states that every action has an equal and opposite reaction.

Example : when we kick a ball , the force exerted at the ball equals the force overcome by our foot.