Physics
Medium
Question
Work done by the force of friction is____________________?
A
always positive
B
always negative
✓ Official correct answer
C
positive only for small frictional force
D
positive only for large frictional force
Community credibility
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A
always positive
No member explanations yet for this option.
B
always negative
No member explanations yet for this option.
C
positive only for small frictional force
No member explanations yet for this option.
D
positive only for large frictional force
No member explanations yet for this option.
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