Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.
Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.
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Astronaut Jane's lifeline to her spaceship comes loose and she finds herself stranded, "floating" 75.0m from the spaceship. She throws her 2.00kg wrench at 20.0m/s in a direction away from the ship. If she and her spacesuit have a combined mass of 175kg how long does it take her to coast back to the spaceship?
Do I use the equation: (Mass of Suit x Mass of Jane) Initial Velocity + Mass of wrench (Initial Velocity) = (M of Suit + M of Jane) (V 1 + M of wrench (V 1 of wrench)
Therefore = (175kg) 0 + 2kg (0) = (175kg) (final velocity + 2kg (20.0m/s) ??????????
Last edited by Kristy02y (2010-07-12 22:45:45)
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work out the momentum of the wrench, the momentum of Jane will be the same but in the opposite direction. Use the equation p = mv to find her velocity. It is then a simple matter of finding out the time required to travel 75m
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