Posted by Ama on Tuesday, December 7, 2010 at 1:29pm.
1.75 sec. should read 1.75 m/s
Equate total energy before and after dive:
(1/2)mv²=(1/2)mx²+mgh
=(1/2)m*1.75² + mg(3)
Cancel out m and solve for v.
g=acceleration due to gravity = 9.81 m/s².
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