Question

In a billiard table, a ball of mass weighing 250 g rolls with a velocity of

2.5 m/s and rebounds back at 2.5 m/s. Calculate the following:

a. change in momentum

b. impulse experienced by the ball

Answer 1

a. change in momentum

$$\Delta p=0.25(2.5-(-2.5))=1.25\text{ kg}·\text{m/s}.$$

b. impulse experienced by the ball

$$I=\Delta p=1.25\text{ kg}·\text{m/s}.$$