math and physics

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if drop down an stone -that it is like a ball- into the slush and if it was soft enough stone come into the slush in some distance, if throw it away from a certain height to comes into slush and if we want stone to come into slush 2 times more than before from what hight should we throw it away?

  • math and physics -

    Thought I did this yesterday
    Ke at hit = Pe at top = m g h
    m g h = F d
    assume F from slush is constant maybe
    then doubling d, the depth happens when doubling h

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