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OpenStudy (athena):
is the work positive or negative when a satellite is moving away from a planet?
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OpenStudy (espex):
Positive
OpenStudy (anonymous):
Which system is the work being done on? The satellite is doing positive work on the earth to escape orbit, but the earth does negative work on the satellite.
OpenStudy (anonymous):
Wok is a scalar. We are only concerned with the magnitude.
OpenStudy (anonymous):
Sure, but the sign of the work depends on how we draw our system boundary and which system we are analyzing.
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