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A child is sliding on a sled at 1.9 m/s to the right. You stop the sled by pushing on it for 0.80 s in

  • A child is sliding on a sled at 1.9 m/s to the right. You stop the sled by pushing on it for 0.80 s in a direction opposite to its motion. If the mass of the child and sled is 39 kg, what is the magnitude of the average force you need to apply to stop the sled? Use the concepts of impulse and momentum. Express your answer with the appropriate units.


 

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