Asked by Brooke

A 0.0420-kg hollow racquetball with an initial speed of 18.3 m/s collides with a backboard. It rebounds with a speed of 7.4 m/s.
Calculate the total impulse on the ball.
Answered by Damon
if initial speed in +x direction

impulse = change of momentum

.0420 (-7.4 - 18.3)
Answered by John
-10.8 is the impulse
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