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OpenStudy (lynfran):
A gun of mass km fires a shell of mass m. the barrel of the gun is elevated at an angle alpha and the gun recoils horizontally. show that the shell leaves the barrel at an angle beta to the horizontal where tan beta =( (k+1)/k ) tan alpha
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OpenStudy (ebayminer126):
Okay do what is the question?
OpenStudy (lynfran):
its a prove that have to be completed
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