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Posted by on Monday, November 19, 2012 at 2:28pm.

A 40,000 kg railroad car initially traveling at 10 m/s collides inelastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?

  • Physics - , Monday, November 19, 2012 at 3:21pm

    m1•v1 =(m1+m2)v
    v= m1•v1/m1+m2)

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