Posted by **ashley --- HELP PLEASEE!!!** on Sunday, May 1, 2011 at 3:31pm.

A train is moving with a speed of 50 miles per hour. A man standing in the rear of a train car throws a ball toward the front of the train with a speed of 10 miles per hour. If a stationary observer outside the train sees this happen, what speed is the ball moving with? Explain your answer.

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