1. STATE EXPECTATION:
P2.1 AN OBJECT’S POSITION CAN BE
MEASURED AND GRAPHED AS A FUNCTION
OF TIME. AN OBJECT’S SPEED CAN BE
CALCULATED AND GRAPHED AS A
FUNCTION OF TIME.
P2.2 THE MOTION OF AN OBJECT CAN BE
DESCRIBED BY ITS POSITION AND VELOCITY
AS FUNCTIONS OF TIME AND BY ITS
AVERAGE SPEED AND AVERAGE
ACCELERATION DURING INTERVALS OF TIME.

2. MOTION
1. Distance = The length of a path between
two points. An object’s distance is
how much ground it has covered.
Distance is measured in meters.
2. Displacement= An object’s change in
position. How far out of place it is.

3. Comparing distance and displacement:

4. Think about how distance and displacement
would compare for a typical roller coaster
ride.
3. Displacement is an example of a vector.
A vector is a quantity that has magnitude
and direction. Vectors are shown using
arrows.

5. These vectors could be added using
vector addition. When would you subtract
the vectors?
4. MOTION= A CHANGE IN POSITION.

6. 5. Speed = the ratio of the distance an
object moves and the time it takes the
object to move.
-speed formula: SPEED = DISTANCE
TIME
-What would be the units for speed?
Units =
-Speed cannot be measured, it must be
calculated.

7. Each time that you use a formula in
Physics First you must apply the same
3 steps:
Write out the formula S = D/T
Plug in the numbers
with their units S = 24m/6sec
3. Correct answer with
correct units S = 4 m/sec

8. 6. CONSTANT SPEED – AN OBJECT WHOSE
MOVEMENT IS THE SAME SPEED
THROUGHOUT.
7. GRAPHING CONSTANT SPEED
DISTANCE
TIME

9. - DESCRIBE THE MOTION IN THIS GRAPH.
DISTANCE
TIME
8. Average Speed = The total distance
traveled divided by the total time it took to
travel that distance.

10. *The slope of a line on a distance-time
graph is speed.

11. -Individual parts of a graph can be
analyzed to determine speed at a certain
time during the journey.

12. 9. VELOCITY DESCRIBES BOTH SPEED AND
DIRECTION OF AN OBJECT. Velocity is a
vector.
-VELOCITY UNITS MAY BE METERS/SECOND
WEST FOR EXAMPLE.
-A change in velocity can result from a
change in speed and/or a change in
direction!

13. 10. Types of Motion
One Dimensional – Occurs in one
plane.
Example – walking across the floor.
b. Two Dimensional – Occurs in two
planes.
Example – walking down stairs –
walking forward and down at the
same time.

14. 11. Direct relationship = when one variable
increases, the other also increases OR
when one variable decreases, the other
also decreases.
Example: Speed Formula
S = D/T Where speed and distance
have a direct relationship
Speed = 10m/10s so speed is 1m/s
Increase the distance and keep time
the same.
Speed = 100m/10s so speed now
equals 10m/s *Notice that when
distance went up, speed also increased.

15. 12. Inverse relationship – When one variable
increases, the other decreases.
Example – Speed formula – speed and
time have an inverse relationship.
Speed = 10m/10s so speed = 1m/s
Now increase the time while keeping the
distance the same.
Speed = 10m/100s so speed = .1m/s
*Notice that as the time increased,
the speed decreased.

16. 13. ACCELERATION – THE RATE OF CHANGE
OF VELOCITY.
- ACC. = FINAL VEL. -ORIGINAL VEL.
TIME
- ACCELERATION UNITS ARE
METERS/SECOND/SECOND
- ACCELERATION GRAPH
VELOCITY
TIME
What is depicted in this graph?