Asked by vernon

A 70 kg person is riding on a frictionless skateboard at 5 m/s. A friend facing him throws a 5kg ball toward him at 20 m/s. What is his final speed after catch the ball?
Answered by Damon
70*5 - 5*20 = 75 v
Answered by MC Hammer
Answer is (10/3)V or 3.333V
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