Question

Derive an expression for the acceleration gained by a body under a force acting on it using Newton's second law of Motion Hence define one Newton of force Show that forces always exist in pair​

Answer 1

Answer:

Newton’s second law of motion states that the force exerted by a body is directly proportional to the rate of change of its momentum. For a body of mass ‘m’, whose velocity changes from u to v in time t, when force ‘F’ is applied

Explanation:

F∝TimeChangeinmomentum​

F∝tmv−mu​

F∝m(tv−u​)

⇒F∝ma⇒F=kma(∵a=tv−u​)

⇒F=ma(∵k=constant=1)