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A boy sits at rest on the floor. What two vertical forces act upon the boy? (SEL

ID: 2226345 • Letter: A

Question

A boy sits at rest on the floor. What two vertical forces act upon the boy? (SELECT ALL THAT APPLY.) a) frictional force b) normal force c) gravitational force d) coulomb force Do these two forces constitute an action/reaction pair as defined by Newton's third law of motion? Explain. 1) Yes, these forces constitute an action/reaction pair because they are equal in magnitude, opposite in direction, and acting on the same body. 2) No, these forces do not constitute an action/reaction pair because although they are equal in magnitude and opposite in direction, they act on the same body. 3)It is not possible to determine whether these forces constitute an action/reaction pair.

Explanation / Answer

2) No, these forces do not constitute an action/reaction pair because although they are equal in magnitude and opposite in direction, they act on the same body