Recent content by chynawok

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    Elastic Collision: Mass m2 Velocity & Momentum of m1

    Suppose that a particle of mass m1 approaches a stationary mass m2 and that m2 > m1. a) Describe the velocity of m2 after an elastic collision--that is, one in which both momentum and kinetic energy are conserved. Justify the answer mathematically. b) What is the approximate momentum of m1...
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    Solving Problems Involving Tension & Weight

    oops. typo- it's 45 degrees.
  3. C

    Solving Problems Involving Tension & Weight

    I looked in the physics book and couldn't find any similar examples. Maybe someone can tell me how to go about this problem: A picture it hanging on a nail. The tension in each string segment which is holding up the picture is 3.5 N. The string forms a 45 degree angle on the two top...
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    Average Deviations: Why is it Always Zero?

    Why is the average of the deviations of a set of measurement values always zero?
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