# physical science

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A 1 kg object requires 10 N of force to lift it 5 m from the bottom of a well. (use g = 10 m/s2)
What is the kinetic energy when the object has fallen halfway down the well (2.5m)?

• physical science -

PEchange=KE change
mgh-mg(h/2)=KE
solve for KE

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