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Friction and Gravity
Term | Definition |
---|---|
Friction | The force that one surface exerts on another when they rub against each other |
Rolling Friction | The kind of friction that results when a wheel turns on a surface |
Sliding Friction | The kind of friction that results when you rub sandpaper against wood |
Fluid Friction | The kind of friction that exists between oil and a door hinge |
Weight | A measure of the force of gravity on an object |
Free Fall | The state that exists when the only force acting on an object is gravity |
Gravity | The force that accelerates objects towards Earth |
Terminal Velocity | A falling object reaches this when forces of gravity and air resistance are balanced |
Air Resistance | The kind of friction that slows a falling object |