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    I really need help with this problem!

    I have not been able to figure out anything about this problem. I hope somebody will help me. A body of mass 2.0 kg makes an elastic collision with another body at rest and continues to move in the original direction but with one-fourth of its original speed. (A): What is the mass of the...
  2. T

    Homework Help?

    I have been working on this problem for a while, and I still don't understand how to set it up for the first part of this problem: At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.2 m/s squared. At the same instant a truck, traveling with...
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