Multiple Choice
Which of the following is in static equilibrium?
A) a rock resting on the ground
B) a rock sliding at constant velocity across a frictionless surface
C) a rock rotating in place on a frictionless surface
D) a rock rotating at a constant rate as it slides at constant velocity across a frictionless surface
E) a rock falling off a cliff
Correct Answer:

Verified
Correct Answer:
Verified
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