1. Motion in One Dimension
Kinematics

2. Dynamics vs. Kinematics
Dynamics – motion related to __________
Kinematics – describes motion ______________ without regard to cause or force

3. Frame of Reference Specify an ______
For 1-D motion the coordinate system is ______
x = 0 x

4. Time and Space Instant ≡ particular ______ in time
Interval ≡ ________ between two instants
Position ≡ particular ______ in space
Displacement ≡ __________ between two positions

5. Vectors vs. Scalars Vectors – indicate magnitude and ______
Boldfaced and/or vector sign
Displacement
Velocity
Acceleration
Scalars – indicate __________ only
Distance
Speed
Magnitude of acceleration

6. Displacement is a Vector
Fig. 2.2, p. 25
For 1-D, vector nature is indicated by ______sign

7. Displacement Change in _________ is called displacement
The sign tells us if displacement is towards _______ or ________ values

8. Average Velocity Displacement divided by _____ interval
The ____ tells us if object is moving toward positive or negative values

9. Instantaneous Velocity
The average velocity when the time interval approaches _____
It is the ______ of the line of a position versus time graph

10. Instantaneous Velocity – Graphical Interpretation
What is v at t = 4 s?

11. Average Acceleration
The change in velocity over a _______________

12. Instantaneous Acceleration
The average acceleration when the time interval approaches _____
It is the ______ of a velocity versus time graph

13. Signs of v and a v a
Object is: +
speeding up –
slowing down

14. Graphical Interpretation
Red
Blue
Green
Rank the velocities in decreasing order.
Find numerical values for the velocities.
Rank the speeds in decreasing order.

15. Graphical Interpretation (cont’d)
Red
Green
Are the velocities constant?
Which has the larger acceleration?

16. Types of Motion Uniform Motion: v = ________, a = ______
Nonuniform Motion
Uniform acceleration: a = _________
Nonuniform acceleration: a is _____ constant