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jores

  • one year ago

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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  1. jores
    • one year ago
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    any help please

  2. salini
    • one year ago
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    use momentum conservation how do i know it as there is no external force anywhere m1u1+m2u2=m1V1+m2v2

  3. jores
    • one year ago
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    thanx that right

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