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Physics

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A blue whale materializes 11.5 km above an airless planet with an acceleration of gravity of 6.85 m/s2. What is the speed of the whale right before impact? (Work-Energy Theorem)

  • Physics -

    mgh=mv^2/2
    v= sqr(2gh) =sqr(2•6.85•11500) =397 m/s

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