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college physics

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An 7.81g bullet is fired into a 220g block that is initially at rest at the edge of a table of h = 1.15 m height.The bullet remains in the block, and after the impact the block lands d = 2.13 m from the bottom of the table. Determine the initial speed of the bullet.

  • college physics - ,

    how long does it take to fall 1.15m

    h=1/2 g t^2 solve for t.

    what was its horizontal velocity? v=2.14/timefell

    now consider the conservation of momentum
    bulletmomentum=bulletblockmomentum
    7.81*V=(7.81+220)vhorizotalabove

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