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Force and Motion
A set of vocabulary words, to review the Force and Motion Unit
Term | Definition |
---|---|
Motion | Movement of an object in relation to its surrounding |
Force | A push or pull acting upon an object |
Balanced Forces | Forces that are equal but opposite in direction; when they act on an object, they cancel each other out and no change occurs in the object's motion |
Unbalanced Forces | Unequal forces acting on an object; results in a change in the object's motion in the direction of the larger force |
Net Force | A measure of the force being exerted on an object, zero net force means an object is at rest or moving at a constant speed |
Friction | Force that resists the motion of an object by acting between two objects in contact with each other |
Air Resistance | Frictional forces placed upon an object as it moves through the air, causing it to slow down |
Gravity | Force that tends to pull objects toward one another |
Kinetic Energy | Energy an object has because of its motion |
Average speed | The average distance traveled |
Inclined plane | Simple machine that consists of a flat, sloping ramp |
Simple machine | A simple device, such as a lever, pulley, or inclined plane; with moving parts, makes work easier |
Potential Energy | Stored energy in an object |
Speed | Distance traveled divided by the time needed to travel that distance (S=D/T) |
Work | The transfer of energy |
Acceleration | The rate at which an object changes its velocity (increasing, decreasing, or changing speed) |
Newton | The SI unit for measurement of force, i.e. weight |
Pulley | Simple machine consisting of one or more wheels with a rope wrapped around them |