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motion and forces

unit 1 lessons 1-4

lesson 1-4Definition
Position The location of an object.
Reference Point A location to which another location is compared.
Motion An objects change in position relative to a reference point.
Speed The distance traveled divided by the time interval during which the motion occurred.
Vector A quantity that has both size and direction.
Velocity The speed of an object in a particulat direction.
Acceleration The rate at which velocity changes over time; an object accelerates if it's speed, direction, or both change.
Centripetal acceleration The acceleration directed toward the center of a circular path.
Force A push or a pull exerted on an object in order to change the motion of the object;force has size and direction.
Net Force The combination of all of the forces acting on an object.
Inertia The tendency of an object to resist a change in motion unless an outside force acts on the object.
Gravity A force of attraction between objects that is due to their masses.
Free Fall The motion of a body when only the force of gravity is acting on the body.
Orbit The path that a body follows as it travels around another body in space.
Created by: 18hillsmane0916
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