- #1

mrnastytime

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## Homework Statement

An astronaut of mass 65 kg pushes off a satellite of mass 420 kg, exerting a force of 120 N for the 0.94 s they are in contact.

## Homework Equations

What is the speed of the astronaut after they have separated?

Ans: 1.84 m/s

What is the speed of the satellite after they have separated?

Ans: .268 m/s

How far apart are they after 1 minute?

d=? m

## The Attempt at a Solution

This is my attempt. I used the position as a function of time formula:

[tex]x = x_0 + v_0 t + (1/2) a t^2[/tex]

For the astronaut: x= 0+0+.5(1.84 m/s^2)(60 s)^2= 3312 m

For the satelite: x= 0+0+.5(.268 m/s^2)(60)^2= 513 m

In order to get the separation, i subtracted the two and got 2799 m. But this is incorrect according to my online homework program. did i make a mistake or use the wrong formula?