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April 20, 2014

April 20, 2014

Posted by **Kendra** on Tuesday, January 19, 2010 at 9:10pm.

- physics -
**drwls**, Wednesday, January 20, 2010 at 7:41amA) Solve Y = (a/2) T^2.

a is the acceleration and T is the 0.80 s rocket burn time.

B) Solve

V = a T, using the T = 0.8 s

V is the rocket velocity at 0.8 s.

C) Add Y (from part (A) ) and the additional distance that it rises after burnout, Y'.

After burnout, it continues to rise until (1/2) V^2 = g Y'.

Solve for the additiona altitude gain, Y'. The total altitude at that time is Y' + Y

D) 0.8 s PLUS the time it rises after burnout, T'.

g T' = V

T' = V/g

Total time rising = T + T'.

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