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/s2)g=10 m/s2 nearly: 1. 2.1 kg m/s 2. 1.4 kg m/s 3. 0 kg m/s 4. 4.2 kg m/s [NEET 2021]