1. Speed & D-T Graph

2. Speed
A measure of how fast something moves a particular distance over a certain amount of time.
V=d/t
v=Speed/Velocity
d=Distance
t=Time

3. Speed SPEED DOES NOT MEAN YOU ARE MOVING FAST.
We can determine speed in several ways.
A word problem (Ex. Patrick walks 25 m in 5 seconds what is his speed?)
Collecting data and measuring both distance and time
Distance-Time Graph

4. Velocity Velocity can be positive or negative.
Velocity MUST have a direction.
You use the EXACT SAME FORMULA to find velocity that you do speed.

5. Acceleration The rate at which velocity changes
Acceleration occurs when:
An object changes speed (going faster or slower)
An object changes direction
Acceleration = Final Speed – Initial Speed Time

6. Distance Time-Graph
A graph that represents the speed of an object based on the distance the object moves and the time it takes to move.

7. Distance Time Graph You can determine:
Average Speed (Total Distance ÷ Total Time)
If the object moves at a constant speed
Speed for a specific part of the journey
Total Distance Traveled
Displacement

8. In what section are they traveling the fastest?

9. Slope

10. Slope

11. Slope

12. Create a distance time graph using the data in the t-chart below.
Distance 5 m 10 m 15 m 20m 20 m 30 m 40m 50m 60 m
Time
1 s
2 s
3 s
4 s
5 s
6 s
7 s
8 s
9 s
10 s