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A pile driver drops from a height of 35 meters before landing on a piling. 
What is the speed of the driver when he hit the piling?
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Use the formula  v  = 
,
where v is the speed at the end, h is the height and "g" is the gravity acceleration.
    v = 
 = 26.22 meters per second    ANSWER
Solved.
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Source :   any textbook in  Physics.