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10.A 150 m long train is moving with a uniform velocityof 45 km/hr. The time taken by the train to cross abridge of length 850 metre is(1) 56 sec(2) 68 sec(4) 92 sec(3) 80 sec

Answer»

Total length discovered by train=850m+150m=1000m

Velocity=Dispacement/time

t=s/v

t=1000m / (12.5m/s)

t=80s

Time taken to cross the bridge is 80s



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