Question

A pitcher throws a 0.15 kg baseball so that it crosses home plate horizontally with a speed of 10 m/s. It is hit straight back at the pitcher with a final speed of 24 m/s. Assume the direction of the initial motion of the baseball to be positive.

Answer 1

-5.1 kg m/s

Step-by-step explanation:

Impulse is the change in momentum.

Change in momentum= final momentum - initial momentum=m
`v_(2)` +m
`v_(1)`

Plugging in the values= -0.15*24 - (0.15*10) (The motion towards the pitcher is negative as the initial motion is considered to be positive)

Impulse=-5.1 kg m/s (-ve means that it is the impulse towards the pitcher)