You are hitting a tennis ball against a wall. The 0.057-kg tennis ball traveling at 29 m/s strikes the wall and rebounds at the same speed. Earth is the object of reference.

Question

Determine the ball's change in momentum (magnitude).

Answer 1

-29 m/s - (+29 m/s) = -58 m/s velocity change
change in momentum = -.057(58) kg m/s

Answer 2

so the magnitude is 3.31 kg m/s

Answer 3

30

Answer 4

Ha, goteem