1. How are instantaneous speed and average speed different?
Chapter 11.2 Notes Name:
Speed
How are instantaneous speed and average speed different?

2. Predict other combinations of speed units.
Chapter 11.2 Notes Name:
Speed
Speed is –
The SI unit of speed is –
DOK question
Predict other combinations of speed units.

3. Chapter 11.2 Notes Name:
Speed
Average Speed
Average speed is –

4. Calculating Average Speed
Chapter 11.2 Notes Name:
Speed
Calculating Average Speed
While traveling on vacation, you measure the times and distances traveled. You travel 35 kilometers in 0.4 hour, followed by 53 kilometers in 0.6 hour. What is your average speed?

5. Speed Read and Understand What information are you given?
Chapter 11.2 Notes Name:
Speed
Read and Understand
What information are you given?

6. What unknown are you trying to calculate?
Chapter 11.2 Notes Name:
Speed
Plan and Solve
What unknown are you trying to calculate?
What formula contains the given quantities and the unknown?
Replace each variable with its known value.

7. Speed Look Back and Check Is your answer reasonable?
Chapter 11.2 Notes Name:
Speed
Look Back and Check
Is your answer reasonable?

8. Chapter 11.2 Notes Name:
Speed
1. A person jogs 4.0 kilometers in 32 minutes, then 2.0 kilometers in 22 minutes, and finally 1.0 kilometer in 16 minutes. What is the jogger’s average speed in kilometers per minute?

9. Chapter 11.2 Notes Name:
Speed
2. A train travels 190 kilometers in 3.0 hours, and then 120 kilometers in 2.0 hours. What is its average speed?

10. Instantaneous speed, v, is –
Chapter 11.2 Notes Name:
Speed
Instantaneous Speed
Instantaneous speed, v, is –
DOK question
Why would you need to how fast you where going at a specific time?

11. How can you find the speed from a distance-time graph?
Chapter 11.2 Notes Name:
Graphing Motion
How can you find the speed from a distance-time graph?

12. A distance-time graph is – Slope is –
Chapter 11.2 Notes Name:
Graphing Motion
A distance-time graph is –
Slope is –
A steeper slope on a distance-time graph –

13. Chapter 11.2 Notes Name:
Graphing Motion

14. Chapter 11.2 Notes Name:
Graphing Motion

15. Graphing Motion DOK question Compare and contrast the three graphs
Chapter 11.2 Notes Name:
Graphing Motion
DOK question
Compare and
contrast the
three graphs
to the right.

16. How are speed and velocity different?
Chapter 11.2 Notes Name:
Velocity
How are speed and velocity different?

17. Vectors can be used to show changes in motion.
Chapter 11.2 Notes Name:
Velocity
Vectors can be used to show changes in motion.
Vectors of varying lengths, each vector corresponding to the velocity at a particular instant –
A longer vector represents a –
A shorter one a –
DOK question
Why do they use a arrow to represent a vector?

18. Chapter 11.2 Notes Name:
Combining Velocities
How do velocities add?

19. Sometimes the motion of an object involves –
Chapter 11.2 Notes Name:
Combining Velocities
Sometimes the motion of an object involves –
DOK question
Hypothesize why at an angle the vector is less than just adding the two up.

20. The velocity of the boat relative to the riverbank is –
Chapter 11.2 Notes Name:
Combining Velocities
The velocity of the boat relative to the riverbank is –

21. Chapter 11.2 Notes Name:
Assessment Questions
A woman jogs 10 kilometers in one hour, stops at a restaurant for one hour, and then walks 10 kilometers in two hours. What is her average speed for the outing?
0.2 km/h
4 km/h
5 km/h
10 km/h

22. Chapter 11.2 Notes Name:
Assessment Questions
Lisa plotted time on the x-axis of a line graph and distance on the y-axis. What does the slope of her graph represent?
total distance traveled
velocity
speed
displacement

23. Chapter 11.2 Notes Name:
Assessment Questions
Lisa plotted time in seconds on the x-axis of a line graph and distance in centimeters on the y-axis. Her plot showed a straight line from (0,0) to (10, 20). What is the speed?
0.5 cm/s
2 cm/s
10 cm/s
20 cm/s

24. Two velocities of an object are combined by using
Chapter 11.2 Notes Name:
Assessment Questions
Two velocities of an object are combined by using
division of the larger velocity by the smaller velocity.
addition of the two speeds.
vector addition.
numeric addition.

25. Chapter 11.2 Notes Name:
Assessment Questions
A kayak is moving across a stream that is flowing downstream at a velocity of 4 km/h. The kayak’s velocity is 3 km/h. What is the magnitude of the kayak’s velocity relative to the river bank?
1.3 km/h
5 km/h
7 km/h
12 km/h

26. The SI unit for speed of an airplane is miles per hour. True False
Chapter 11.2 Notes Name:
Assessment Questions
The SI unit for speed of an airplane is miles per hour. True False