a train of length 150m moving with a speed of 75 km/hr passes a tree calculated how long will it take
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Answer :
7.2 sec
Explanation :
by using relative motion
lets suppose tree is moving 150 m at speed of 75km/hr
150m = 0.150 km
then time
time = distance / speed
T = 0.150km/ (75km/hr)
T = 0.002 hr
T = 0.002×60×60 sec
T = 7.2 sec
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