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physics

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A 5.0 kg block with a speed of 2.8 m/s collides with a 10 kg block that has a speed of 2.0 m/s in the same direction. After the collision, the 10 kg block is observed to be traveling in the original direction with a speed of 2.5 m/s. What is the velocity of the 5.0 kg block immediately after the collision?

  • physics - ,

    conservation of momentum:

    MV+mv=MV' + mv'

    10*2+5*2.8=10*2.5+5*v'
    solve for v'

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