Question

two trains are approaching to one another with the velocity 60 km per hour and hundred kilometre per hour on a parallel trade and the relative of one train w.r.t to another.
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Answer 1

Answer:160 km/ hr

Explanation:

In case of relative motion the speed of the body depends on two conditions.

Net speed = s1+s2

1.opposite direction

When 2 bodies are approaching each other the net effect of the speed is the sum of their speed .

2.paralell to each other or moving in same direction

When two bodies are moving in same direction the net effect of speed will reduce. Or the net speed is their speeds difference

That is net speed = s1-s2