SOLUTION: a boy in a train throws a ball in forward direction with speed of 20miles per hour.if train is moving with speed of 80 miph what is speed of ball as measured by observer on ground

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Question 734358: a boy in a train throws a ball in forward direction with speed of 20miles per hour.if train is moving with speed of 80 miph what is speed of ball as measured by observer on ground
Answer by Alan3354(69443) About Me  (Show Source):
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a boy in a train throws a ball in forward direction with speed of 20miles per hour.if train is moving with speed of 80 miph what is speed of ball as measured by observer on ground
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20 + 80 = 100 mi/hr