Answer to Question #177747 in Physics for Awais ul Rahman

Question #177747

A 90-kg football player stands on a frictionless lake of ice. He catches a 3-kg football and then moves at 400 cm/s. What was the initial velocity of the football?

Expert's answer

"mv_0=(m+M)v\\to v=\\frac{(m+M)v}{m}=\\frac{(3+90)\\cdot4}{3}=124\\ (m\/s)" . Answer

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