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August 30, 2014

Homework Help: physics please help

Posted by Anonymous on Saturday, August 21, 2010 at 12:52am.

A rocket, initially at rest on the ground, accelerates straight upward with a constant acceleration of 29.4 . The rocket accelerates for a period of 10.0 before exhausting its fuel. The rocket continues its ascent until its motion is halted by gravity. The rocket then enters free fall.

Find the maximum height, , reached by the rocket. Ignore air resistance and assume a constant acceleration due to gravity of 9.810 .


Since the acceleration is constant i used the equation

y=y0+v0t+.5at^2
y0=0
v0t=0
What is acceleration?
would it be 9.81 or 29.4?

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