A train 110m long is moving with a uniform velocity of 45 Km per hr the time it will take to cross a bridge 1 Km long is
A. 77.77s
B.80.00s
C.77.00s
D.88.88s
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Total distance train should travel in order to COMPLETELY cross the bridge is
= 1 km + 110 m
= 1000 m + 110 m
= 1110 m
Speed = 45 km/hr
= 45000 m / hr
= 45000 m / (60 × 60 s)
= 12.5 m/s
Time = Distance / Speed
= 1110 m / (12.5 m/s)
= 88.80 s
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