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22 May, 14:22

A 100 kilogram clown is fired 15 meters per second from a 500-kilogram cannon. What is the recoil speed of the cannon?

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  1. 22 May, 16:52
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    The recoil speed of the cannon is 3 m/s.

    Explanation:

    Law of conservation of momentum is used to find the recoil speed of the cannon.

    m₁v₁ = - m₂v₂

    m₁ = mass of clown = 100 kg

    v₁ = speed of the clown = 15 m/s

    m₂ = mass of the cannon = 500 kg

    v₂ = speed of the cannon = ?

    Plugin the values, we will get,

    v₂ = m₁v₁ / - m₂ = - 100*15 / 500 = - 1500 / 500 = 3 m/s

    So the recoil speed of the cannon is 3 m/s.
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