There are problems due Wednesday.

On these next problems, think about increasing the level of detail in your model. Specifically,

- Include a corodinate system in your sketch
- Define the variables you use
- In the conceptual representation, explain the physics concepts that are behind your model. Also, be sure to include your prediction/ estimate. This is just like the scientific method- forma hypothesis first.
- Do not use the handout sheet or turn in scratch work.

Today we'll continue to practice with the tools and vocabulary for describing motion:

- Vectors
- A vector is a quantity with both a length and a direction.
- Vectors can be described by a series of numbers (components) or by a direction and length (magnitude).
- We can add or subtract vectors graphically or numerically.
- 2-D motion
- Much more common than 1-D motion.
- May appear to be more complicated, but actually involves no new physics.
- Each component can be assumed to be independent of each other.