Statement A : Shock absorbers reduce the magnitude of change in momentum.

Statement B : Shock absorbers increase the time of action of impulsive force

A force of 25 N acts on a body at rest for 0.2s and a force of 70 N acts for the next 0.1s in opposite direction. If the final velocity of the body is 5ms–1, the mass of the body is

A force of 5 N acts on a body for 2 milliseconds. Calculate the impulse. If the mass of the body is 5g, calculate the change of velocity.

Gravel is dropped on a conveyor belt at the rate of 2 kg/s. The extra force required to keep the belt moving at 3ms–1 is

The internal forces acting on an isolated system

Find the molecular mass of a gas that takes three times more time to effuse as compared to He with the same volume