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11 August, 18:29

Two male moose charge at each other with the same speed and meet on a icy patch of tundra. as they collide, their antlers lock together and they slide together with one-third of their original speed. what is the ratio of their inertias?

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  1. 11 August, 20:02
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    Their linear inertia is equivalent to their masses. Let the inertia of the first moose be m₁ and the second be m₂.

    m₁u + m₂u = (m₁ + m₂) x 1/3 u

    3m₁ + 3m₂ = m₁ + m₂

    3 m₁/m₂ + 3 = m₁/m₂ + 1

    m₁/m₂ = 2

    The ratio of their inertias is 2
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