1. The problem statement, all variables and given/known data A train travels due South at 30 m/s (relative to the ground). It is raining and the rain is being blown towards the South by a strong wind. The path of each raindrop makes an angle of 70° with the vertical, as measured by an observer stationary on the ground. An observer on the train however sees the drops fall perfectly vertically. Determine the speed of the raindrops relative to the ground. 3. The attempt at a solution The correct answer should be 31.93 m/s, but I have absolutely no clue on how to approach this problem. How can we relate the velocity of the train with the angle of the raindrops? Any guidance is very much appreciated.