Question

Two trains A and B move on two parallel tracks with a speed of 40 km/hr and 140 km/hr in the opposite direction
Find the relative velocity of A with respect to B
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Answer 1

Answer:

Here we will learn about the concept of two trains passes in the same direction.

When two train passes a moving object (having some length) in the same direction.

Let length of faster train be l meters and length of slower train be m meters

Speed of faster train be x km/hr and speed of slower train be y km/hr

Relative speed = (x – y) km/hr

Then, time taken by the faster train to pass the slower train = (l + m) meters/(x – y) km/hr

Note: Change km/hr to m/sec

Now we will learn to calculate when two trains running on parallel tracks (having some length) in the same direction.

Answer 2

Answer:

Refer to the attachment for your answer.