Question

26 A ball of mass 0 4 kg is thrown at a wall. It strikes the wall with a speed of 3 ms perpendicular to the wall and bounces off the wall with a speed of 2 ms s The change in the momentum of the ball is​

Answer 1

Answer:

0.4 units is the change in momentum

Explanation:

m=0.4kg

V1=3m/s

V2=2m/s

According to the law of conservation of momentum,

0.4 x 3 = 0.4 x 2

Therefore, 1.2 = 0.8

but this isn't possible, hence there is a difference which will be...

1.2 - 0.8 units

= 0.4 units