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A train that is running at the speed of 72 km/h crossesan electric pole in 36 seconds. The length of the train (in metres) is: |
360 m 460 m 620 m 720 m |
720 m |
Speed = 72 km/h 72 km/h = 72 × \(\frac{5}{18}\) = 20 m/sec Length of train = 36 × 20 = 720 m |
