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April 23, 2014

Homework Help: Physics

Posted by Kudo on Wednesday, January 11, 2012 at 12:44am.

An open train car moves with speed 11.3 m/s on a flat frictionless railroad track, with no engine pulling the car. It begins to rain. The rain falls straight down and begins to fill the train car.
The speed of the car 1. increases.
2. decreases.
3. stays the same.


A(n) 71.6 kg astronaut becomes separated from the shuttle, while on a space walk. She
finds herself 73.6 m away from the shuttle and moving with zero speed relative to the shuttle. She has a(n) 0.679 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 minutes.
Answer in units of min

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