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| 1. |
100 m long train crosses 400 m bridge with velocity 72km/ h. find time to cross the bridge |
| Answer» E = 400 + 100 = 500M Speed = 72 km/hr = 72 X 5/18 = 20m/sTime = Distance/speed = 500m/20m/s = 25sIt 25 SECOND | |