Part of the Motion unit

If you miss a day this week, start by doing some of the Guided Problems in Chapter 2 of the "Practice" book (the black book). Then come to Mark with questions.

## Day 1

Monday, September 12

Significant Digits

There are a lot of ties in Olympic swimming -- Why?

Some data: World Record in the men's 50 meter freestyle is 20.91 seconds. How fast is this?

The timing in swimming is precise to a level of one-hundredth of a second. How far does a swimmer travel in this amount of time?

There are clocks that are precise to a thousandth of a second, even a billionth of a second. Why don't we use them for Olympic sports?

(Some background , for after we've done the problem)

## Day 2

Tuesday, September 13

Order of Magnitude -- estimate, leaving out all the details.

Estimate the total annual income of the United States, essentially adding up the income of all people in the country.

Motion Graphing. Defining a coordinate system. The distinctions between distance, position, displacement, speed, and velocity

## Day 3

Double, Wednesday or Thursday September 14/15

- The collision problem

## Day 4

Friday, September 16

- First quiz, covering unit conversion, significant digits, approach to problem solving
- Science Identity

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