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Physics Homework Question due in 20mins, literally have no idea what i'm doing

  1. Dec 12, 2009 #1
    014 (part 1 of 2) 10.0 points

    A(n) 19 g object moving to the right at
    24 cm/s overtakes and collides elastically with
    a 34 g object moving in the same direction at
    14 cm/s.

    Find the velocity of the slower object after
    the collision.

    Answer in units of cm/s.

    015 (part 2 of 2) 10.0 points

    Find the velocity of faster object after the

    Answer in units of cm/s.

    016 10.0 points

    A(n) 4.72 kg sphere makes a perfectly in-
    elastic collision with a second sphere that is
    initially at rest. The composite system moves
    with a speed equal to one-third the original
    speed of the 4.72 kg sphere.

    What is the mass of the second sphere?

    Answer in units of kg.
  2. jcsd
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