Question

two train are running in opposite direction at the speed of 25 km/h and 35km/h .if the length of the train are 185 m and 215 m respectively.
a.fund the time taken to pass each other
b.if they are moving in the same direction how long will they take to pass each other
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Answer 1

Step-by-step explanation:

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

Solution:

Relative speed of trains = (35-25) km/hr

= 10 km/hr

= 10 × 5/10 m/sec

= 5 m/sec

Time taken by the train to clear off each other = sum of length of trains/relative speed of trains

= (185+215)/5 sec

= 400/5 sec

= 80 sec