U4L1 ­ Distance versus Time Graphs.notebook
December 06, 2016
Lesson 1: Distance vs. Time Graphs
Relation: A description of how 2 variables are connected.
Linear Relation: A relation between 2 variables that forms
a straight line when graphed.
Nonlinear Relation: A relation between 2 variables that
forms a smooth curve, for example, when graphed.
When the motion of an object is studied, there is a
relationship between the distance travelled by the object
and the time during which the object travelled. This
relationship can be recorded and shown using a distance
vs. time graph.
1
U4L1 ­ Distance versus Time Graphs.notebook
December 06, 2016
Demostration Using the CBR Ranger
1) Starting 1 m away, the student walks slowly away from the
CBR at a constant speed.
2) Starting 5 m away, the student slowly walks toward the
CBR at a constant speed.
2
U4L1 ­ Distance versus Time Graphs.notebook
December 06, 2016
Demostration Using the CBR Ranger
3) Starting 5 m away, the student walks slowly towards the
CBR at a constant speed, stops for 2 seconds, and then
slowly backs away at the same constant speed.
4) Starting 1 m away, the student walks very slowly away
from the CBR at a constant speed, pauses for 2 seconds,
then walks faster away..
3
U4L1 ­ Distance versus Time Graphs.notebook
December 06, 2016
Demostration Using the CBR Ranger
5) Starting 1 m away, the student accelerates away from the
CBR, pauses, then accelerates back.
6) Starting 7 m away, the student runs fast then when the
CBR is started decelerates.
4
U4L1 ­ Distance versus Time Graphs.notebook
December 06, 2016
CONCLUSIONS:
Moving AWAY is a line or curve moving up and to the right.
Moving TOWARDS is a line or curve moving down and to the
right.
Constant speed is a straight line that is not horizontal.
Stopping is a horizontal line.
The faster the speed the steeper the line.
Accelerating is a curve that becomes steeper as it moves to
the right.
Decelerating is a curve that becomes flatter as it moves to
the right.
5
U4L1 ­ Distance versus Time Graphs.notebook
December 06, 2016
Assigned Work
pg. 91 # C1, 1, 3, 4, 5, 7
6