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Motion and Forces

Unit 1, lessons 1-4

TermDefinition
Position Describes the location of an object.
Speed Distance traveled divided by the time interval during which the motion occured.
Reference Point A location to which you compare to other locations.
Vector A quantity that has both size and direction.
Motion A change in position over time.
Velocity Speed in a specific direction.
Acceleration The rate at which velocity changes.
Centripetal Acceleration Acceleration in circular motion.
Force Simply a push or a pull.
Net Force The combo of all the forces acting on an object.
Inertia The tendency of all objects to resist a change in motion.
Gravity A force of attraction between objects due to their mass.
Free Fall Something is in free fall When gravity is pulling down and no other forces are acting on it.
Orbit An object is in orbit when it travels around another object in space.
Fluid Any material that can flow and that takes the shape of its container.
Pressure The measure of how much force is acting on a given area.
Pascal The S.I unit for pressure.
Atmospheric Pressure The pressure caused by the weight of the atomosphere .
Buoyant Force An upward force that fluids exert on all matter.
Archimedes' Principle States that the buoyant force acting on an object in a fluid is an upward force equal to the weight of fluid that the object displaces.
Created by: 18jacksonj1129
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