Question

A ball of mass 100gram moving with a velocity of 10m/sec is brought to rest by a boy 0.01sec calculate ,impulse and ,the force applied by a boy?​

Answer 1

Answer:

Explanation:

Mass=100g=0.1kg

Velocity=10m/s

Time taken to bring at rest=0.01 s

Momentum of the ball= mv

                                    = (0.1 x 10) kg m/s

                                    = 1 kg m/s

Force applied by the boy in 0.1 s = (1 /0.1) kg m.s^-2

                                                      = 10 N

Final momentum of the ball = 0 N.s

Initial momentum of the ball = 1 N.s

Impulse = (1-0) N.s