Posted by **Hannah ** on Thursday, September 30, 2010 at 9:50am.

Surprisingly, very few athletes can jump more than 2.6 ft (0.8 m) straight up. Use d = 1/2 gt2 and solve for the time one spends moving upward in a 2.6 foot vertical jump. Then double it for the "hang-time" -- the time one's feet are off the ground.

- physics -
**Anonymous**, Friday, October 8, 2010 at 7:17pm
12.5

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