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Physics

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An open railroad car of mass 2445 kg is coasting with an initial speed of 22 m/s on a frictionless, horizontal track. It is raining, and water begins to accumulate in the car. After some time, it is found that the speed of the car is only 5 m/s. How much water (in kilograms) has accumulated in the car?

  • Physics -

    conservation of momentum applies

    2445*22=(2445+M)5
    solve for Mass rainwater M in kilograms.

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