A 300m long train is moving with uniform velocity of 90km/h. Find the time taken by the train to cross another train of length 700m moving with same speed in opposite direction.
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distance d= 300m +700m = 1000m
velocity v1=v2=90km/hr
= 90*1000m/3600s
= 25m/s
time taken by the train to cross another train of length 700m is
t= d/(v1-v2) [where v1 is velocity of train 1 & v2 is velocity of train 2]
t= 1000m/(25-(-25)) [v2= -25 since it moves in opposite direction]
t= 1000m/ 50s
t= 20s
Explanation:
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