Posted by HELP on Saturday, December 11, 2010 at 10:32pm.
Let Vo be the initial speed.
Vo remains the horizontal velocity component while it falls.
Vo *(fall time) = 0.375 m
Compute the time T that it takes to fall H = 1.375 m, and use that in the equation above to solve for Vo.
(1/2)gT^2 = H
T = sqrt(2H/g)
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