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OpenStudy (anonymous):
A 100kg cannon at rest contains a 10 kg cannon ball, when fired the ball leaves the cannon with the spend of the 90m/s. what is the recoil speed of cannon
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OpenStudy (anonymous):
any help please
OpenStudy (anonymous):
use momentum conservation how do i know it as there is no external force anywhere m1u1+m2u2=m1V1+m2v2
OpenStudy (anonymous):
thanx that right
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