February 23, 2017

Homework Help: Physics

Posted by Jackie on Monday, September 13, 2010 at 11:35pm.

A rocket is fired vertically with an upward acceleration of 30 m/s2. After 20 s, the engine shuts off and the rocket then continues rising (while in free-fall). The rocket eventually stops rising and then falls back to the ground.
(a) What is the highest point the rocket reaches?
(b) What is the total time the rocket is in the air?
(c) What is the speed of the rocket just before it hits the ground?

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