If the mass of the child and sled is 41 rm kg what average, Ask an Expert

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A child is sliding on a sled at 1.6 {rm m/s} to the right. You stop the sled by pushing on it for 0.80 {rm s} in a direction opposite to its motion.If the mass of the child and sled is 41 {rm kg}, what average force do you need to apply to stop the sled? Use the concepts of impulse and momentum.

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