- #1

sunbunny

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An 80.0 kg spacewalking astronaut pushes off a 620kg satellite, exerting a 100N force for the 0.590s it takes him to straighten his arms.How far apart are the astronaut and the satellite after 1.20min ?

I know that i need to somehow set it up to be a kinematics problem and that i need to find the acceleration and how fast the astronaut and the satellite are moving.

I tried to use F=ma where a=100N/80kg and then the same for the orbital

for the astronaut i got the acceleration to equal 1.25m/s^2

for the satellite a=0.1613 m/s^2

and the change in time used was 72-0.59s=71.41s

I then put these into xf=xi +vi(t)+.5at^2 to find the distances

I then added their distances together to get the total distance between them however this way that I did it was wrong.

I got 3187.1m (astronaut) +411(orbit)

any feedbaclk would be great