1. Speed

2. What is speed? Imagine that a car travels 55 miles per hour
“Miles” represents distance
“Hour” represents time

3. What is speed?
Speed is the distance an object travels in a certain amount of time

4. Calculating Speed
All you need to know is the distance traveled and the time required to travel that distance.
“per” = divided by .

5. Calculating Speed

6. Examples 15 kilometer/hour
A person riding a bike travels 30 kilometers in 2 hours. What is their speed?
15 kilometer/hour

7. Examples
A car maintains a speed of 60Km/hr for 2.5 hours. How far did it travel?
150 kilometers

8. Examples
Jessica runs 91m at a speed of 3m/s. How long did it take her to run this distance?
30.3 hours

9. What 2 types of speed exist?
Instantaneous speed
Speed at specific instance in time or a specific moment
Usually over a much shorter distance

10. What 2 types of speed exist?
Average speed
For most moving objects, speed is not constant
Because speed can change so much, we calculate average speed
Average speed = Total distance/Total time

11. What is Velocity? Examples Storm tracking
We need to know the speed of the storm = 25km/hr
We need to know its direction = eastward
Then we know its velocity = km/h westward

12. What is Velocity? Examples Air traffic controlling
We need to know the speed of the plane = 900km/hr
We need to know its direction = westward
Then we know its velocity = km/h westward