Air resistance and rolling resistance (wheels, bearings)
Friction slows things down.
friction slows it down
lubricant
Friction slows down the motion of objects.
it slows down the rocks
Friction
The type of friction that slows down a sliding object is kinetic friction. It occurs between two objects in contact when one (or both) of the objects is in motion. Kinetic friction opposes the direction of the object's motion, leading to a decrease in its speed.
friction
Drag.
friction
Slows it down.
Friction slows down objects by in some capacity rubbing against them