Homework Help: physics

Posted by harry on Wednesday, September 8, 2010 at 11:55pm.

model rocket is launched straight upward with an initial speed of 50.0 m/s. It accelerates with a constant upward acceleration of 1.00 m/s2 until its engines stop at an altitude of 130 m.
(a) What is the maximum height reached by the rocket?
m

(b) How long after lift-off does the rocket reach its maximum height?
s

(c) How long is the rocket in the air?
s

physics - drwls, Thursday, September 9, 2010 at 2:36am
Follow the approach outlined in this similar question of a few days ago:

http://www.jiskha.com/display.cgi?id=1283656710
physics - Bill, Tuesday, September 21, 2010 at 11:51pm
A certain car is capable of accelerating at a rate of +0.60 m/s2. How long does it take for this car to go from a speed of 20 mi/h to a speed of 65 mi/h?
physics - Johnny, Tuesday, November 30, 2010 at 9:17pm
idk whats the answer

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