Year: 2021
Topic: Laws of motion
Time :
1.
A ball of mass 0.15 kg is dropped from a height 10 m, strikes the ground and rebounds to the same height.The magnitude of impulse imparted to the ball is (g = 10 m/s
2
) nearly
(1). 0 kg m/s
(2). 4.2 kg m/s
(3). 2.1 kg m/s
(4). 1.4 kg m/s