1. Motion Vocabulary Part 1
Fall 2016

2. Rate
A ratio that compares 2 related things.
Speed
How fast an object changes its position.
Velocity
Speed with direction.

3. Average Speed (m/s)
The rate of change between the distance travelled and the time of travel.
s = Total Distance
Total Time

4. Different ways you will see the speed equation:
s = displacement/time
s = position/time
s = Δd/ Δ t
s = change in distance/change in time
s = final position – initial position
final time – initial time

5. Instantaneous Speed
The rate of travel at a specific point in time.

6. = Change in Speed Total Time
This is NOT an equation!
This is a unit of measurement!
Acceleration (m/s2)
The rate of change in speed over a specified time.
= Change in Speed
Total Time

7. Different ways you will see the acceleration equation:
a = speed/time
a = velocity/time
a = Δs/ Δ t
a = change in speed/change in time
a = final speed – initial speed
final time – initial time

8. Inertia
The tendency of an object to resist a change in its state of motion or rest.

9. Effort Distance
Effort Force
Electric Motor
Inclined Plane
Input Work
Joule
Lever
Load Distance
Load Force
Output Work
Power
Pulley
Screw
Simple Machine
Speed
Watt
Wedge
Work
Please Update your EMM Vocab Glossary in the back of your journal by Friday. You may use your textbook, Sciencesaurus, your notes, or the internet.