1. The good students will take copious notes.
Quiz Review
The good students will take copious notes.

2. The Topics You Need To Study
Unit Conversions
One dimensional Motion
Solving for distance
Solving for time
Solving for velocity
Solving for acceleration
Vectors
Finding magnitude
Finding direction

3. Unit Conversions
DO NOT WRITE MPH!!! Instead, write miles/hr (this will help you keep from getting confused)
1600 meters = 1 Mile
1.6 km = 1 Mile
3600 Seconds = 1 hr

4. Unit Conversions cont’d
Remember, when converting units, each section of the picket fence (after the first) must be an equivalency (i.e. 1 mile/1600 m, or 1 hr/3600 sec)
Put the unit you want to cancel OPPOSITE (numerator or denominator)
Example:
25 miles
1600 meters
1 hr
1 hr
3600 sec
1 mile

5. Distance, Time and Velocity
USE THE
TRIANGLE!
How do we find D?
How do we find V? D
How do we find T? V T
Remember: D = V X T is basically one equation!!

6. Velocity, Acceleration and Time
USE THE
TRIANGLE!
How do we find V?
How do we find A? V
How do we find T? A T
Remember: V = A X T is basically one equation!!

7. Missing Time and Missing Velocity
Missing velocity equation:
D = ½ A•T2
Missing time equation:
Vf2 = Vi2 + 2AD

8. Strategies
Identify what the question is asking for – look for phrases like
How long…? (answer should be a time in sec or min or hours)
How far…? (answer should be distance in meters or km or miles)
How fast…? (answer should be speed/velocity in m/s or km/h or miles/hr)
What is the acceleration of…? (answer should be an acceleration in m/s2)

9. Write down known info Distance = ? Time = ? Acceleration = ?
Velocity = ?
“Starts from rest…” → Vi = 0

10. Identify the completely missing quantity
This will help you identify which of the four basic equations you need.
V = D/T
A = V/T
D = ½ A•T2
Vf2 = Vi2 + 2AD

11. Vector Stuff
Remember: find the magnitude (length) of a vector by Pythagorean Theorem
Remember: find the direction (angle) of a vector by Tan-1(ΔY/ ΔX) -- and keep track of final and initial Y and X in case one is negative
Remember: always measure your angle from the Positive X-axis and go COUNTERCLOCKWISE to get a positive angle. Do not use negative angles

12. Dr. Mason’s Helpful Hints
Remember your units
Understand the difference between velocity and acceleration
Likewise, understand the difference between m/s and m/s2
Remember: Δanything = final - initial
Beware of writing units we have NEVER used in class. Examples: miles/hour2, m/s3
Remember what negative acceleration means

13. There is gravity on the moon. Accept it and move on.
Lest we forget…
There is gravity on the moon. Accept it and move on.