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Speed question

  1. Mar 26, 2007 #1
    1. The problem statement, all variables and given/known data
    dan is gliding on his sb at 4m/s. he suddenly jumps backward off his sb, kicking the sb foward at 8m/s. how fast is dan going as his feet hit the ground? dan's mass is 50kg and the sb's mass is 5kg

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Mar 26, 2007 #2
    Welcome aboard!

    Do you have any thoughts on this problem at all? Concepts that may prove useful? Equations that relate what you know with what you're looking for?
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