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Unit 1 Physics

TermDefinition
Origin The point on a Cartesian graph where the x-axis intersects with the y-axis. This point usually has the coordinates (0,0).
Position An object's location relative to a well-defined coordinate system at a particular instant in time.
Displacement An objects overall change in position in meters (m). Displacement is a vector quantity. It has both magnitude and a direction.
Distance A measure of how far an object has traveled in meters (m) from its origin to its destination. Distance is a scalar quantity that only has magnitude.
Magnitude The amount or quantity
Vectors Quantities that express both magnitude and direction.
Scalars Quantities that do not include direction information and are described by magnitude alone. (e.g. time, speed, mass, distance).
Resultant a vector quantity that is equal to the addition of two or more vector components acting at the same point.
tip-to-tail method a method of vector addition where one can add any two vectors by placing the tail of one so that it meets the tip of the other one.
Average Speed an object’s total distance traveled divided by the time elapsed. The SI unit is meters/second (m/s).
Average Velocity an object’s displacement divided by time elapsed. The SI unit is meters/second (m/s).
instantaneous velocity the velocity of an object at a specific point in time.
constant velocity velocity that remains unchanged.
Average Acceleration the rate of change of velocity divided by time elapsed. The SI unit for acceleration is meters per second squared (m/s2).
constant acceleration acceleration that does not change
instantaneous acceleration acceleration at a given moment in time.
kinematics the science of describing the motion of an object.
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