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

Solution

## The correct option is D A is wrong and B is correctForce is a rate of change of momentum.$$Force$$ is measured as $$rate\ of\ change\ of\ momentum.$$ It is not equal to change of momentum.$$F=\dfrac{dM}{dt}$$    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.Physics

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