Question #70717
When does a dart have the greatest change in momentum -- when it bounces off the car or when it doesn't? Explain.
Expert's answer
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.
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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#340153 on Dec 2023
#340153 on Dec 2023