Question

What is newton's second lawalso give example​

Answer 1

$\textbf{Question:-}$

What is newton's second law of motion?Also give example.

$\textbf{Answer:-}$

Definition:-

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.

Examples:-

• When you are kicking a ball, you are increasing the speed by applying force to it. Therefore,it accelerates.
• If you use the same force to push a truck and push a car, the car will have more acceleration than the truck.

Derivation:-

For a body of mass 'm' , whose velocity changes from u to v in time t, when Force 'F' is applied.

=>Force∝Change in momentum/Time

=>F∝mv-mu/t

=>F∝m(v-u)/t

=>F∝ma

=>F=kma(a=v-u/t)

=>F=ma(Since k=constant=1)

Answer 2

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