Sunday

December 21, 2014

December 21, 2014

Posted by **promice** on Sunday, February 3, 2013 at 1:05pm.

- science -
**Henry**, Tuesday, February 5, 2013 at 7:04pmV = Vo + g*t.

Tr = (V-Vo)/g = (0-9)/-9.8 = 0.918 s.

Tf1 = Tr = 0.918 s. = Fall time from hmax to edge of cliff.

h = Vo*t + 0.5g*t^2 = 100m.

9*t + 4.9t^2 = 100

4.9t^2 + 9t - 100 = 0.

Use Quad. Formula.

Tf2 = 3.69 s. = Fall time from edge of cliff to Gnd.

T = Tr + Tf1 + Tf2.

T = 0.918 + 0.918 + 3.69 = 5.53 = Total

time in flight.

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