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Homework Help: Conservation of Momentum problem.

  1. Jul 16, 2015 #1
    1. The problem statement, all variables and given/known data
    Im stuck on this question please help. =/
    a 50.0g bullet travels right and becomes embedded in a 7.00kg stationary block. the block and embedded bullet moves off at a velocity of 5.00m/s right. what was the initial velocity of the bullet? the answer is 706m/s right.

    2. Relevant equations

    3. The attempt at a solution
    IMG_20150716_205938.jpg
     
  2. jcsd
  3. Jul 16, 2015 #2

    TSny

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    Homework Helper
    Gold Member
    2017 Award

    Watch your units. Try including units when you set up your equation.
     
  4. Jul 16, 2015 #3
    ohh i see so instead of 50g i convert it to 0.05kg i got 710m/s its still 4m/s off?
     
  5. Jul 16, 2015 #4
    nvm im bad sorry for wasting ur time gg it was 35.25 instead of 35
     
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