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general science

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a train goes forward at a speed of 1 m/s for 20 seconds. then it stops and goes backward at a speed of 0.5 m/s for 4 seconds. after both movements are completed, how far is the train located from its starting point.

  • general science - ,

    forward = 1 m/s x 20 s = 20 meters.
    reverse = 0.5 m/s x 4 s = 2 meters.
    20 m - 2 m = 18 m from the starting point.

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