Question

two trains each of length 100m moving parallel towards each other at speed 72 KM/HR and 36km/hre resp.. in how much time will they cross each other

Answer 1

Both the trains are of lenght 100m.
so the total distance will be
= 100 + 100
= 200 m

Relative speeds = 72 + 36
= 108 km/h
= 108 x1000/ 3600    m/s
= 30 m /s

time taken = Distance/ Speed
= 200/ 30
= 6.67 sec

Answer 2

Answer:

Explanation:

Both the trains are of lenght 100m.

so the total distance will be

= 100 + 100

= 200 m

Relative speeds = 72 + 36

= 108 km/h

= 108 x1000/ 3600    m/s

= 30 m /s

time taken = Distance/ Speed

= 200/ 30

= 6.67 sec

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