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April 16, 2014

April 16, 2014

Posted by **Jeff** on Saturday, September 29, 2012 at 6:36pm.

a) How long does it take the parcel to hit the ground?

b) How far does the parcel travel in the x-direction, from the time it is released until it contacts the ground?

- physics -
**Damon**, Saturday, September 29, 2012 at 6:54pmhorizontal speed of fighter and parcel = 200 cos 30 forever = 173 m/s

initial vertical speed of parcel = 200 sin 30 up = 100 m/s

v = 100 - g t

h = 2400 + 100 t - 4.9 t^2

h = 0 at ground

so

4.9 t^2 - 100 t - 2400 = 0

solve quadratic for t

then

x = 173 t

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