Question

Statement A: If the force varies with time then the net force is measured by the total change in momentum of the body.
Statement B: Change in momentum and impulsive force are numerically equal.

• A. A & B are correct
• B. A & B are wrong
• C. A is correct and B is wrong
• D. A is wrong and B is correct

Answer 1

The correct option is D A is wrong and B is correct

Force is a rate of change of momentum.

$Force$ is measured as $rateofchangeofmomentum.$ It is not equal to change of momentum.

$F=\frac{dM}{dt}$ or, $F\cdot dt=dM$

Impuse of force, $J=F\cdot dt=dM$

Hence, Change in momentum and impulsive force are numerically equal.

A is wrong and B is correct.