Inelastic collision: finding initial velocity of projectile

  • Thread starter phys1618
  • Start date
  • #1
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Homework Statement


One way to measure the muzzle velocity of a bullet is to fire it horizontally inot a massive block of wood hanging from a string an d measure the height to which the wood (containing the bullet) rises.
in one experiment the bullet had a mass of .05kg, and the wood has a mass of 2kg. After the shot, the wood and bullet rose to a height of .5 meteres. waht was the original speed of the bullet?

Homework Equations



d=(vf2-vi2)/2a
KE=1/2Mv2
change of ENERGYsystem=constant
PEi +KEi=PEf + KEf
PE=Mgh

The Attempt at a Solution


i ended up with 29.17 m/s for the original speed
 

Answers and Replies

  • #2
299
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Could you show your work please?
 

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