Assertion: friction | /r/CapableOf | do positive work
Facets:
value: in certain frames of reference
type: LOCATION
Source sentences:
text: However, friction can do positive work in certain frames of reference.
text: However, in the text the example is trying to prove that friction can do positive work, which it can't.
text: As the examples show, it is perfectly normal for friction to do positive work, though perhaps not as often as negative work.