Brain Teasers
Ball and Train
Science
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You're on a train that's moving forward at 50 mph. You throw a ball in the direction that the train is moving. Relative to you and the train, the ball leaves your hand travelling at 20 mph.
From the point of view of someone standing alongside the tracks, how fast is the ball moving?
From the point of view of someone standing alongside the tracks, how fast is the ball moving?
Answer
70 mph.Hide Answer Show Answer
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