Posted by Christy on Saturday, March 1, 2008 at 6:34pm.
I am definitely lost on this problem. Can someone help me out?
A(n) 51.3 kg astronaut becomes separated
from the shuttle, while on a spacewalk. She
finds herself 50.3 m away from the shuttle
and moving with zero speed relative to the
shuttle. She has a(n) 0.537 kg camera in her
hand and decides to get back to the shuttle
by throwing the camera at a speed of 12 m/s
in the direction away from the shuttle.
How long will it take for her to reach the
shuttle? Answer in units of min.

Physical science question 2  Quidditch, Saturday, March 1, 2008 at 6:57pm
Think conservation of momentum here. Relative to the shuttle, the momentum of the astronaut and camera is 0 (zero velocity realtive to the shuttle). After she throws the camera, her momentum plus the momentum of the camera is still 0.

Physical science question 2  drwls, Saturday, March 1, 2008 at 7:00pm
Consider a coordinate sytaem moving with the shuttle. Apply the law of conservation of momentumin that coordinate system.
Since total momentum will be conserved when she throws away the camera, Mastronaut*Vrecoil= = Mcamera*Vcamera
Vrecoil = (.537)/51.3)*12 m/s
= 0.1256 m/s
Time to reach shuttle = 50.3 m/0.1256 m/s = 400 seconds = 6 2/3 minutes
Answer This Question
Related Questions
 Physics  A(n) 57.3 kg astronaut becomes separated from the shuttle, while on a ...
 Physics  An open train car moves with speed 11.3 m/s on a flat frictionless ...
 Physical science  An astronaut on a space walk bumps the shuttle and starts ...
 Physical science  An astronaut on a space walk bumps the shuttle and starts ...
 physics  A 94 astronaut and a 1200 satellite are at rest relative to the ...
 physics  A 82kg astronaut and a 1300kg satellite are at rest relative to the ...
 Physics  A 90 kg astronaut and a 1100 kg satellite are at rest relative to the ...
 Physics  A 95 kg astronaut and a 1500 kg satellite are at rest relative to the ...
 physics  A 88kg astronaut and a 1200kg satellite are at rest relative to the ...
 Physics  A 97kg astronaut and a 1100kg satellite are at rest relative to the ...
More Related Questions