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

A boy of mass 50 kg standing on ground exerts a force of 500 N on the ground. The force exerted by the ground on the boy will be:

A. 50 N B. 25000 N

C. 10 N D. 500 N

A Honda City car, A Maruti Alto car, A Tata Nano car and a Mahindra Scorpio car, all are running at the same speed of 50 m/s under identical conditions. If al these cars are hit from behind with the same force and they continue to move forward, the maximum acceleration will be produced in: Mass of the different vehicles: Honda City – 1150Kg, Maruti Alto-720Kg, Tata Nano-600Kg,Mahindra Scorpio-2510Kg

A. Honda City B. Maruti Alto

C. Tata Nano D. Mahindra Scorpio

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

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