# Shared Flashcard Set

## Details

definitions 8.1
"BC Science 10" The Language of Motion
18
Physics
04/27/2013

Term
 Scalars
Definition
 Quantities that describe magnitude but do not include direction
Term
 Magnitude
Definition
 The size of a measurement or the amount (number) you are counting.
Term
 Vector
Definition
 Quantities that describe magnitude and direction.
Term
 Distance (d)
Definition
 A scalar quantity that describes the length of a path between two points or locations.
Term
 Position ([image])
Definition
 A vector quantity that describes a specific point relative to a reference point.
Term
 Time (t)
Definition
 When an event occurs
Term
 Time Interval (Δt)
Definition
 The difference between the initial time and the final time.
Term
 Initial Time (ti)
Definition
 When the event begins.
Term
 Final Time (tf)
Definition
 When the event ends.
Term
 Displacement ( Δ[image] )
Definition
 The straight-line distance and direction from one point to another.   Δ[image] = [image]f - [image]i
Term
 Uniform Motion  (position-time graph)
Definition
 Travelling in equal displacements in equal time intervals: neither speeding up, nor changing direction. A straight line sloping up or down on a position-time graph.
Term
 Best-fit line
Definition
 A smooth curve or straight line that most closely fits the general shape oulined by the points.
Term
 slope
Definition
 rise/run average velocity
Term
 steep slope (position-time graph)
Definition
 moving quickly
Term
 gentle slope (position-time graph)
Definition
 moving slowly
Term
 line moving away from origin (position-time graph)
Definition
 moving away from the starting point
Term
 line moving toward the origin (position-time graph)
Definition
 moving toward the starting point
Term
 zero slope horizontal line (position-time graph)
Definition
 object is at rest
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