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Physics

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A 9600 kg boxcar traveling at 17 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 9.0 m/s. What is the mass of the second car?

I know that this is an inelastic collision because the 2 stick together but I need help PLEASE!!

  • Physics -

    conservation of momentum:

    9600*17+m*0=(m+9600)9
    solve for m.

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