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25 February, 21:03

You're riding on a train that's moving at 50 km/h, and you roll a ball down the aisle at 2 km/h in the same direction as the train is moving. If a person standing on the ground near the train track could see the ball, how fast would it appear to be moving?

A. 2 km/h

B. 48 km/h

C. 50 km/h

D. 52 km/h

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  1. 25 February, 21:24
    0
    D. 52 km/h

    relatve to the track outside. Galiliean relativity
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