A 755 N diver drops from a board 10.0m above the water's surface. find the divers speed 5m above the water

and the diver's speed when striking the water.

Please help me somebody =( i have no idea how do solve it

it would be even better if you have explanations along with answers thank you =) i would love anyone who would answer my question

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  • 1 decade ago
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    Energy's conservation:

    1) Uo + Eko = U1 + Ek1

    Uo = m g H ; Eko = 0 ; U1 = mg h ; Ek1 = 0.5 m V^2

    V^2 = 2 g(H-h) = 98.1 ---> V = 9.9 m/s

    2) Uo + Eko = U2 + Ek2

    mgH = 0.5 m V'^2

    V' = sqr(2 g H) = 14 m/s

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