Question

a ball of mass 0.1 kg hits a vertical wall normally with a speed of 30m/s & rebounds back with the speed of 20m/s .Find the impulse of force exerted on wall

Answer 1

Answer:

Explanation:

The impulse means nothing but change in momentum

That implies m(v1-v2)=0.1 (30-20)

=0.1(10)

=1 kgm/s