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Answer to Question #33235 in Mechanics | Relativity for Nguyen Tony

Question #33235
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. But she does have devices to measure distance and time accurately. She knows her own mass is 76.4kg kg , but she is unsure of the mass of a large gas canister in the airless rocket. When this canister is approaching her at 3.50m/s m/s , she pushes against it, which slows it down to 1.10m/s m/s (but does not reverse it) and gives her a speed of 2.40m/s m/s .
1)What is the mass of this canister?
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