Question

Two trains, each 50 m long are travelling in opposite direction with velocity 10 m/s and 15 m/s respectively. Find the time of crossing.

Answer 1

Answer:

4 is the answer

Explanation:

effective distance which needs to be covered=50+50=100m

velocity of 1st train=10m/s

v of 2nd train=15m/s

net relative velocity=15-(-10)=25m/s

time=distance/velocity

time=100/25=4