Multiple Choice
In the context of types of forces and free-body diagrams, air resistance is best classified as what type of frictional force?
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6. Intro to Forces (Dynamics)
Types Of Forces & Free Body Diagrams
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Which scenario is an example of an unbalanced force acting on an object?
A
A skydiver falls at constant velocity after reaching terminal speed because drag balances weight ( ).
B
A box initially at rest begins to accelerate to the right when pushed, so the net force is nonzero ( ).
C
A book rests on a table without moving because the upward normal force equals the downward weight ( ).
D
A puck slides on frictionless ice at constant speed in a straight line because the net force is zero ( ).
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