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Momentum of biker dragging foot

  • Thread starter StotleD
  • Start date
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A 77.0 kg rider sitting on a 6.6 kg bike is riding along at 8.1 m/s in the positive direction. The rider drags a foot on the ground and slows down to 4.0 m/s still in the positive direction. What is the change in momentum of the rider and bike?
 

Doc Al

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What's the definition of momentum?
 
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What Have You Done So Far
 
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I figured this out, thanks.
 

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