- #1

cheerspens

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## Homework Statement

A Saturn-Apollo rocket has a mass of 5.40 x 10

^{5}kg. What is the initial acceleration of the rocket if the thrust at lift off is 7.40 x 10

^{6}N?

How high will the rocket rise one minute after launch?

## Homework Equations

Fg=mg

F

_{NET}=ma

## The Attempt at a Solution

I used Fg=mg, plugging in 5.5 x 10

^{5}for m and 9.8 for g to get Fg=5.292 x 10

^{6}N.

I then used the F

_{NET}equation as so:

7.4 x 10

^{6}-5.292 x 10

^{6}=(5.4 x 10

^{5})(a)

And my answer was an acceleration of 3.89m/s

^{2}.

For the second question I got that the rocket would reach 233.4m one minute after launch.

Is this correct or how is this done correctly? Thanks!