Physics: Testing the Coefficient of Kinetic Friction?

Choose answer:
A. Student A's test is actually measuring the coefficient of static friction.
B. Student A's test is measuring the force of static friction.
C. Student A's test is measuring the force of kinetic friction, not the coefficient of kinetic friction.
D. Student A's test is measuring the normal force only, and does not take into account the forces of kinetic and static friction involved. 

2017-04-11T00:37:33.809Z

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