A train moves in north direction with a speed of 54 km/hr. and a monkey running on the roof
Channel: Doubtnut
Date: 2020-01-28

A train moves in north direction with a speed of 54 km/hr. and a monkey running on the roof of the train, against its motion with a velocity of 18km/hr. with respect to the train, then the velocity of monkey as observed by a man standing on the ground:-