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March 25, 2017

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An m1 = 8.40 g bullet is fired into a m2 = 2.17 kg block that is initially at rest at the edge of a frictionless table of height h = 1.13 m.

The bullet remains in the block, and after impact the block lands d = 1.76 m from the bottom of the table. Calculate the initial speed of the bullet.

  • physics - ,

    time to fall 1.13m
    1.13=4.9t^2 solve for t, then use that t to find the initial horizontal velocity of the block/bullet
    1.76=v'*t solve for v'
    then conservation of momentum...

    (m1+m2)v'=m1*v
    solve for v.

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