What happens to a ball thrown forward vs. backward in a moving train?

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Can someone answer this question? If I throw a ball forward and another one backward (opposite to the train's movement) in a moving train, do both balls land at an equal distance from the thrower? I suspect throwing a ball forward is the same as throwing it in a motionless train but what about the ball thrown backward - does it land within a shorter distance?

The speed of the train is constant.
 

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  • #2
DrClaude
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Assuming that the ball and the throw are the same, the ball will land at the same distance from the thrower.

As you mentioned yourself, there is no difference between a motionless train and one that is moving at constant speed (Galilean relativity).
 
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  • #3
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Thanks for the reply DrClaude. Right after my post I read an excerpt from Galileo Galilei's book and I understood how it works (in Galileo's case he was testing moving objects within a ship's hull).
 

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