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| 1. |
A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long? |
| Answer» Formula for converting from km/hr to m/s: X km/hr = X x 5 m/s. 18 Therefore, Speed = 45 x 5 m/sec = 25 m/sec. 18 2 Total distance to be covered = (360 + 140) m = 500 m. Formula for finding Time = Distance Speed Required time = 500 x 2 sec = 40 sec. 25 | |