Applied Force
force used on an object by a person or another object.
Balanced force
Forces that do not change an object's motion.
Direct Force
Forces that must have contact with an object to change its motion.
Electrical Force
Energy of electricity
Force
A push or pull.
Friction Force
The force that one surface puts on another when two surfaces rub against each other
Gravity Force
The force that pulls objects toward each other.
Indirect Force
Forces that can change an object's motion from a distance.
Magnetic Force
Attraction between magnets.
Motion
When one object's distance from another is changing.
Speed
The distance an object travels per unit of time. (speed=distance � time)
Spring Force
Force observed when a spring bounces back from being stretched.
Unbalanced forces
Forces that change an object's motion.