Question

18 second law of motion and explain the expression of Newton's second law of motion

Answer 1

Newton's second law of motion states that the rate of change of momentum is directly proportional to force applied on the body and the change of momentum takes place in the direction of force applied.

Newton's second law of motion gives the expression-F=ma

It tells us that rate of change of momentum depends on mass of the body and acceleration caused due to force applied.

Second law of motion is also the fundamental law of motion as it can be used to derive he first law of motion as follows

      The expression is F=ma and if force is zero then either the mass or acceleration has to be zero and as mass of a body can never be zero,the acceleration is zero which tells us that a body stays in its state of motion or rest until an external force is applied

                                                                                         

Answer 2

Answer:

Explanation:

Newton's Second Law of motion states that the rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of the force. ie., F=ma. Where F is the force applied, m is the mass of the body, and a, the acceleration produced.