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A 130 m long train is moving in up direction with speed72 km/h. Another train of 120 m long is moving in downdirection with speed of 108 km/h. The time in which secondtrain crosses the first train will be |
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Answer» Explanation: RELATIVE speed is 180 km/h which is EQUAL to 180 * 5/18 m/s i.e. 50 m/s the distance to be covered is equal to 250m. therefore TIME taken = 250/50 s = 5 s |
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