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24 March, 19:31

A 290-kg flatcar 25 m long is moving with a speed of 7.0 m/s along horizontal frictionless rails. A 80-kg worker starts walking from one end of the car to the other in the direction of motion, with speed 3.0 m/s with respect to the car. In the time it takes for him to reach the other end, how far has the flatcar moved?

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  1. C
    24 March, 23:22
    0
    Car is 25 m long. worker moves at speed 3.0 m/s with respect to the car

    Time taken to reach the other end

    = 25 / 3 = 8.333 s

    Displacement of flatcar during this period

    = 7 x 8.333

    = 58.33 m
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Home » Physics » A 290-kg flatcar 25 m long is moving with a speed of 7.0 m/s along horizontal frictionless rails. A 80-kg worker starts walking from one end of the car to the other in the direction of motion, with speed 3.0 m/s with respect to the car.
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