Question

A tennis ball of mass m=0.06kg and speed v=28m/s

strikes a wall at a 45°angle and rebounds with same speed at angle 45° with the impulse given by the wall.​

Answer 1

impulse=1.1879 kgm/s

Explanation:

impulse is equal to mass of ball multiply by speed of ball

given, mass of ball=0.06 kg=m

speed of ball=28 m/s=v

speed of ball=28cos45°=19.798

impulse=
`0.06*{19.798}`

impulse=1.1879 kgm/s answer