Irene asked in Science & MathematicsPhysics · 3 months ago

Kinetic energy lost on impact?

Thanks!

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  • Whome
    Lv 7
    3 months ago
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  • 3 months ago

    The conservation of momentum gives us mv = 3mw; so that w = 1/3 v in which case as KE varies with the square of the velocity the post collision ke = KE*1/9; ANS A.

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