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Physics, 25.06.2019 07:10 lezapancakes13
17. a 120 m long train is moving in a direction with speed 20 m/s. a train b moving with 30m/s in the opposite direction and 130 m long crosses the first train in a timea) 6 s(b) 36 sc) 38 sd) 5 s
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17. a 120 m long train is moving in a direction with speed 20 m/s. a train b moving with 30m/s in th...
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