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PS Ch2 Sec 1&2 Vocab

Physical Science Chapter 1 Motion Vocabulary

TermDefinition
motion a change in an object’s position relative to a reference point.
displacement the distance and direction of the object’s change in position.
speed the distance an object travels per unit of time.
reference point a basis or standard for evaluation, assessment, or comparison; a criterion.
coordinate systems a method for identifying the location of a point on the earth
distance a scalar quantity that refers to "how much ground an object has covered" during its motion.
constant speed If an object (such as a car) neither slows down nor speeds up, the car is traveling at a constant speed.
average speed the total distance traveled divided by the total time of travel.
instantaneous speed the speed at a given point in time.
velocity includes the speed of an object and the direction of its motion
momentum the product of its mass and velocity.
Pangaea the single land formation found on Earth 280-230 million years ago. It is believed this massive land formation broke apart to form what we now know as the continents on Earth.
relative motion the calculation of the motion of an object with regard to some other moving or stationary object.
mass a measure of the amount of matter in an object has.
x-axis the horizontal axis of a system of coordinates, points along which have a value of zero for all other coordinates.
y-axis the vertical axis of a system of coordinates, points along which have a value of zero for all other coordinates.
scalar A quantity which does not depend on direction.
vector A quantity that has magnitude and acts in a particular direction.
Created by: Mr. Bryant
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