A fielder pulls his hands backwards after catching the cricket ball. This enables the fielder to:

A. Exert larger force on the ball

B. Reduce the force exerted by the ball

C. Increase the rate of change of momentum

D. Keep the ball in hands firmly

The acceleration produced by a force of 5 N acting on a mass of 20 kg in m/s2 is:

A. 4 B. 100

C. 0.25 D. 2.5

Which of the following situations involves the Newton’s second law of motion?

A. A force can stop a lighter vehicle as well as a heavier vehicle which are moving

B. A force can accelerate a lighter vehicle more easily than a heavier vehicle which is moving

C. A force exerted by a lighter vehicle on collision with a heavier vehicle results in both the vehicles coming to a standstill

D. A force exerted by the escaping air from a balloon in the downward direction makes the balloon to go upwards

Why are car seat-belts designed to stretch somewhat in a collision?

The troops (soldiers) equipped to be dropped by parachutes from an aircraft are called paratroopers. Why do paratroopers roll on loading?