1. Choosing a Frame of Reference
Chapter 11.1 Notes Name:
Choosing a Frame of Reference
What is needed to describe motion completely?

2. Choosing a Frame of Reference
Chapter 11.1 Notes Name:
Choosing a Frame of Reference
Relative motion is –

3. Choosing a Frame of Reference
Chapter 11.1 Notes Name:
Choosing a Frame of Reference
To someone riding on a speeding train, others on the train don’t seem to be moving. Hypothesize why this is?

4. How are distance and displacement different?
Chapter 11.1 Notes Name:
Measuring Distance
How are distance and displacement different?

5. Chapter 11.1 Notes Name:
Measuring Distance
Distance is –

6. Measuring Displacements
Chapter 11.1 Notes Name:
Measuring Displacements
Think about the motion of a roller coaster car.
Construct a Model of this car in terms of distance and displacement.

7. Combining Displacements
Chapter 11.1 Notes Name:
Combining Displacements
How do you add displacements?

8. Combining Displacements
Chapter 11.1 Notes Name:
Combining Displacements
Displacement is an example of a vector.
Formulate a drawing that explains vectors.

9. Combining Displacements
Chapter 11.1 Notes Name:
Combining Displacements
Add the magnitudes of two displacement vectors that have the same __________.
Two displacement vectors with opposite directions are _________ from each other.

10. Combining Displacements
Chapter 11.1 Notes Name:
Combining Displacements
Measuring the resultant vector (the diagonal red line) shows that the displacement from the boy’s home to his school is two blocks less than the distance he actually traveled. WHY?

11. Combining Displacements
Chapter 11.1 Notes Name:
Combining Displacements
Resultant vector is –

12. Chapter 11.1 Notes Name:
Assessment Questions
A car is driving down the highway. From which frame of reference does it appear to not be moving?
standing at the side of the road
a car driving at the same speed but going the opposite direction
sitting inside the car
an airplane flying overhead

13. Chapter 11.1 Notes Name:
Assessment Questions
The SI unit of distance that would be most appropriate for measuring the distance between two cities is the
meter.
centimeter.
kilometer.
mile.

14. If you walk across town, taking many turns, your displacement is the
Chapter 11.1 Notes Name:
Assessment Questions
If you walk across town, taking many turns, your displacement is the
total distance that you traveled.
distance and direction of a straight line from your starting point to your ending point.
distance in a straight line from your starting point to your ending point.
direction from your starting point to your ending point.

15. Chapter 11.1 Notes Name:
Assessment Questions
You travel 30 miles west of your home and then turn around and start going back home. After traveling 10 miles east, what is your displacement from your home?
20 km
20 km west
40 km
40 km west