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  • Feb 21, 2011, 01:51 AM
    Jenesco1
    Collisions, Momentum
    A bowling ball of mass 3.2kg, rolls west at 4.2m/s before striking a stationary ball of mass 3.2kg. After the collision the second ball travels in a direction 24°of west at 3.6m/s. What is the Speed of the first ball??
  • Feb 21, 2011, 09:28 AM
    Unknown008

    Use the principle of conservation of momentum again.

    Sum of initial momenta = Sum of final momenta

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