Question

A train is moving on the level track with the speed of 40 km/h. The passenger in the train observes that rain is falling vertically. When the speed of the train doubles, the passenger observes that rain is falling at an angle of 60degrees with the vertical. Find the velocity of rain with respect to ground. Neglect effect of air.

Answer 1

Explanation:

u=40kmph,v=50kmph,t=0.25h

using : v=u+at

a= 50−40/0.25

a=40kmp/h2