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December 19, 2014

December 19, 2014

Posted by **Me** on Tuesday, July 13, 2010 at 5:49pm.

To the nearest meter what was the maximum height of the package above the ground in the previous problem?

- Physics -
**drwls**, Tuesday, July 13, 2010 at 7:09pmHeight change after release

= 19 t - (g/2)t^2

= -H when t = 14 s.

H is the height above ground where it is released and g is the acceleration of gravity.

Solve for H.

266 - 960 = -H

H = 694 m

It rises a distance h above H before coming back down.

g h = V^2/2 where V is the initial upward speed. (From energy considerations)

h = 18.4 m

max height = 694 + 18 = 712 m

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