1. How fast objects travel
Velocity and Speed
How fast objects travel

2. Speed Speed = v Speed is a scalar – has magnitude Measured in m/s
Slide 1

3. Velocity
Velocity = v
Velocity is a vector so has magnitude and direction
How quickly an object’s position changes as well as the direction of this change
Measured in m/s
Slide 2

4. Speed vs Velocity
Objects traveling at the same speed can have different velocities
E.g. 2 escalators traveling at 3 m/s – one going up, the other going down
Speed of both = 3 m/s
Velocity of escalator going up = 3 m/s up (+3 m/s)
Velocity of escalator going down = 3 m/s down (-3 m/s)
Slide 3

5. Velocity Formula Formula Formula can also be written as: Slide 4
= average velocity
= displacement
= time
Formula can also be written as:
Slide 4

6. Example 1
An object travels east for 25 m for 5 s. What is the average velocity of the object?
Plug and Chug
Slide 5

7. Example 2
A ball is thrown at 4 m/s to the west. How far does the ball travel in 4 s?
Plug and Chug
Slide 6

8. Video
Speed vs. Velocity Video