Speeding

Rain rate of speed the train …?

A physics student at a train speed estimation of falling raindrops in the train cars to the window. An image of the window shows water droplets in diagonal stripes across it. Assuming that the raindrops fall directly low compared to ground-based reference system, and that the train speed is 64 kmh, determine the vertical velocity of the drops. The answer is "about 32" I do not know how to get this: S BQ: Describe the sources of error in the realization of such estimates. The image does not give any value, the rain just goes from top left to bottom right. My teacher said it was not necessary to estimate any viewing angle

You are not giving us the image of the rain the window. Do you think is important? Physics is developed on the observation that surrounds us and ask us to answer a question that is blind (in every sense of the word). The angle of the drops on the window are important and we are ignoring every wind that blows through the window. Being blind, I can not say more.

Is he lucky or not ?Train spotter in narrow escape,(Man almost hit , killed by speeding train)