- #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?