4. A diver of mass, m drops from the board 10.0 m above the water's surface. Suppose the diver vaults off the springboard, leaving it with an initial speed of 3.50 m/s upward. Use energy conservation to find his speed when he strikes the water. 10.0 m 5.00 m KE₁ = 0 PE₁ = mgyi 2 KEJ = mv² PE= = 0
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