1. Problem Solving

2. Three-Step Approach Analyze – What is important, what can be tossed
Calculate – Plug in the numbers and solve
Evaluate – Does the answer make sense? If not, recheck your info and make sure you are using correct units

3. Conversion factors
The number on top (numerator) is equal to the bottom (denominator)

4. Dimensional Analysis Way to analyze a problem using the units Example
How many meters are there in 75.6 km?

5. Complex units Measurement expressed as a ratio of two units (i.e. m/s)
Example
Convert 75 mi/hr into m/s

6. Continued
Solve
The density of lead is g/cm3. What is the density of lead in kg/m3?

7. Continued
Solve
Convert 213 cm into feet