Before After -100 m- m₁ - 100 kg mw=1.0 kg System - astronaut + wrench 10.0 m/s →X →X

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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An astronaut is floating in space 100 m  from her ship when her safety cable becomes unlatched. She and the ship are motionless relative to each other. The astronaut's mass (including space suit) is 100 kg; she has a 1.0 kg wrench and only a 20 minute air supply. She devises a plan to use conservation of momentum to get back to the ship safely by throwing the wrench away from her. 

If the astronaut has only a 10-minute air supply left, how fast must she throw the wrench so that she makes it back to the spaceship in time?

Before
After
100 m-
Vafx
MA
100 kg
mw-1.0 kg
?
System astronaut
+ wrench
Wifix
- 10.0 m/s
>X
>X
Transcribed Image Text:Before After 100 m- Vafx MA 100 kg mw-1.0 kg ? System astronaut + wrench Wifix - 10.0 m/s >X >X
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