julissahonduras1234 julissahonduras1234

24-01-2020
Physics

contestada

A 1kg pool ball travels to the right at 2m/s and hits another stopped pool ball bounces back to the left at 1m/s what is the velocity of the other pool ball

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chowtime2 chowtime2

24-01-2020

Ptotal=Ptotal —> m1v1+m2v2=m1v1’+m2v2’ —> (1kg)(2m/s)+(1kg)(0m/s)=(1kg)(-1m/s)+(1kg)(v2’) —> v2’=3m/s

answer: v=3m/s

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