Final answer:
Wet pavement is more slippery than dry pavement because the force needed to overcome static friction is less than the force needed to overcome sliding friction.
Step-by-step explanation:
Friction is a resistive force that opposes motion or its tendency. Wet pavement is more slippery than dry pavement because the force needed to overcome static friction is less than the force needed to overcome sliding friction.
Static friction is the friction that exists between two objects that are stationary relative to each other, while sliding friction is the friction that occurs when two objects are in motion relative to each other.
When a surface is wet, a thin layer of water forms between the tire and the road, reducing the friction and making it easier for the tires to overcome sliding friction and slip.