1. Newton's Second Law F=m/a Static Friction Sliding Friction
Definition- The force that prevents two surfaces from sliding past each other.
Picture- Box does not move.
Sliding Friction
Definition- The force that opposes the motion of two surfaces sliding past each other.
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Rolling Friction
Definition- a force between a rolling object and the surface it rolls on
Air Resistance
Definition A friction like force that opposes the motion of objects that move through the air.
Friction-
The force that opposes the sliding motion of two surfaces that are touching each other.