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Friction and Gravity
Term | Definition |
---|---|
Friction | The force that two surfaces exert on each other when they rub against each other. |
Gravity | A force that pulls objects toward each other. |
Mass | A measure of the amount of matter in an object. |
Weight | The force of gravity on a person or object at the surface of a planet. |
Free Fall | When the only force acting on a falling object is gravity. |
Air Resistant | Objects falling through air experience a type of fluid friction. |
Terminal Velocity | The greatest velocity a falling object can achieve. |
Projectile | An object that is thrown. |