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## Homework Statement

A rocket is fired vertically and ascends with a constant vertical acceleration of 20.0 m/s^2 for 2.00 seconds. Its fuel is then used up and it continues as a free object. What is the maximum altitude reached?

## Homework Equations

X=Xo+Vot+(1/2)at^2

V=Vo+at

2a(X-Xo)=V^2-Vo^2

## The Attempt at a Solution

I don't know how to solve for the point at which the rocket runs out of fuel. Once I can do that I think I will be able to find the maximum altitude reached as it asks in the problem.