a 160m long train is moving with a uniform velocity of 72 km/h.the time taken by the train to cross a bridge of length 840 meters is
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Answer:
50 seconds.
Explanation:
Length of bridge = 840 m
Length of train = 160 m
Total length = 840 + 160
= 1000 m or 1 km
Velocity = 72 km/h or 20 m/s
Velocity = Displacement/Time
Time = Displacement/Velocity
Time = 1000/20
Time = 50 s
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