motion
The change in position of an object.
motion diagram
A series of images showing the positions of a moving object at equal time intervals.
particle model
A simpilfied version of a motion diagram in which the object in motion is replace by a series of single pints.
coordinate system
The location of the zero point of the variable you are studying and the direction in which the variable increases.
origin
The point at which both variable have the zero value.
position
The seperation between an object and the origin.
distance
How far away an object is from the origin.
magnitude
The measure of a quantiy in size.
vector
The measure of a quantity in direction.
scalars
A quantity that is just numbers with no direction.
examples of scalars
Direction, time, temperature.
resultant
The vector that represents the sum of any two vectors.
time interval
The difference between two times:
Change in time= T final - T inital
displacement
The change in position:
Change in Displacement= D final - D initial
position-time graph
A horizontal axis and the position data on a vertical axis.
instantanious position
The position at a particular instant.
average velocity
Represented by the slope in a position-time graph:
Average Velocity= Change in Displacement/Change in Time
average speed
This is told by the absolute value of the slope of position-time graph.
instantaneous velocity
The speed and direction of an object in a particular instant.
Equation of Motion for Average Velocity
d=vt+d initial
y=mx+b