physics

A bullet of mass 12 g is fired horizontally into a fixed wooden block with a speed of 20m/s. The bullet is brought to rest in the block in 0.1 seconds by a costant resistance. Calculate the
(i) magnitude of the resistance
(ii) distance moved by the bullet in the wood.

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  1. impulse=changemomentum
    force*.1=.012*20
    solve for resistance force.

    distance: average velocity is 10m/s, in .1 sec
    distance=avgvelociyt*time=1meter

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    bobpursley
  2. great! Thank you bobpursley

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  3. Sorry to ask 20 x0.1 is it not 2

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