A train is moving with speed 50 km/h on a straight track and B train is moving with speed 40 km/h on the parallel straight track in the same direction . What is the velocity of a train relative to B train and the velocity of B train relative to A train?

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Solution

$T h e s p e e d o f t r a i n A i s (50 - 40) = 10 K m / h f a s t e r i n t h e s a m e d i r e c t i o n t h a n t r a i n B . O n t h e o t h e r h a n d t h e s p e e d o f t r a i n B i s (40 - 50) = - 10 K m / h s l o w e r i n t h e s a m e d i r e c t i o n t h a n t r a i n A .$

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A train is moving with speed 50 km/h on a straight track and B train is moving with speed 40 km/h on the parallel straight track in the same direction . What is the velocity of a train relative to B train and the velocity of B train relative to A train?

The speed of train A is 50-40=10Km/h faster in the same directionthan train B.On the other hand the speed of train B is 40-50=-10Km/h slower in the same direction than train A.

$T h e s p e e d o f t r a i n A i s (50 - 40) = 10 K m / h f a s t e r i n t h e s a m e d i r e c t i o n t h a n t r a i n B . O n t h e o t h e r h a n d t h e s p e e d o f t r a i n B i s (40 - 50) = - 10 K m / h s l o w e r i n t h e s a m e d i r e c t i o n t h a n t r a i n A .$