When does a dart have the greatest change in momentum -- when it bounces off the car or when it doesn't? Explain.
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Expert's answer
2017-10-25T15:14:07-0400
The change in momentum when it bounces off the car: ΔP_1=mv-(-mv)=2mv. The change in momentum when it doesn’t bounce off the car: ΔP_2=mv-(0)=mv. ΔP_1=2ΔP_2>ΔP_2.
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