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## Homework Statement

A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 8.7 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of θ = 67° when they move past the window as the drawing shows. How fast is the train moving?

## Homework Equations

Vx = V0x +axt

## The Attempt at a Solution

3.4 and 22.3 m/s are both incorrect.

Couldn't figure out how to do it since clearly you don't just use the Pythagorean Theorem... walk me through it?