Question

Newtons second law of motion gives the measure of

• A. Force
• B. Acceleration
• C. Momentum
• D. Impulse

Answer 1

The correct option is A Force

Sir Newton's second law of motion states, the rate of change of linear momentum of a body is directly proportional to the external force applied on the body.

$F\propto \frac{dp}{dt}$

$F=k\frac{dp}{dt}$

Since, $p=mv$

Hence, $F=k\frac{d\left(mv\right)}{dt}$

$F=km\frac{dv}{dt}$

$F=kma$ (as $dv/dt=a$ acceleration)

Thus, Newton's law gives the measure of force.