Two parallel rail tracks run north-south. Train A moves north with a speed of 59 km h-1 and train B moves south with a speed of 85 km-1.  What is the(a) velocity of B with respect to A ?,(b) velocity of ground with respect to B ?,(c) velocity of a monkey running on theroof of the train A against its motion(with a velocity of 17 km h-1 withrespect to the train A) as observed bya man standing on the ground ?

Question

Two parallel rail tracks run north-south. Train A moves north with a speed of 59 km h-1 and train B moves south with a speed of 85 km-1.  What is the
(a) velocity of B with respect to A ?,
(b) velocity of ground with respect to B ?,
(c) velocity of a monkey running on the
roof of the train A against its motion
(with a velocity of 17 km h-1 with
respect to the train A) as observed by
a man standing on the ground ?

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