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10. A train of 150 m length is going gowards north direction at a speed of 10 m s-1. A parrot flying at the speed of S, m s 1towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal toA) 15 sB) 12 s10 sD) 8 s |
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Answer» Since the parrot and the train are moving in the opposite direction therefore parrot's relative velocity will be 5m/s + 10 m/s =15m/s distance=speed*time so 150=15*t t=150/15 =10 sec |
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