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Asked Dec 8, 2019
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A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 4.08 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of 25 degrees when they move past the window, as the drawing shows. How fast is the train moving?

25
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25

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Expert Answer

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Velocity of rain drop in vertical direction and velocity...

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tan 8 = "ain. 4.08m/s tan 25 4.08 m/s train tan 25 = 8.75 m/s

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