1. Physics 100 Lecture 2, May 14, 2010 N. Alberding

2. Mastering Physics Course ID is SFUPHYSICS100E Can buy stand-alone Mastering Physics codes at bookstore. http://www.masteringphysics.com Knight, Jones and Field, College Physics, 1st edition.

3. The Speed of Earth How fast does the surface of the earth move? To make it easy, assume we’re on the equator. Vancouver is at 50° N; how does that change the answer?

4. Puzzle You’ve been told that the earth rotates But it really looks like the sun goes around the earth Why believe what you’ve been told? Why doesn’t a ball come down far away when it’s tossed up in the air? Answer coming…..

5. Why Mathematics? Compact language Logic is embedded in the language. The Travellers’ Tale how non-mathematical language can confuse logic.

6. Kinematics Using math to describe motion Start with space Then do time….

7. Space What is distance? Operational Definition Define in terms of an operation that allows its measurement

8. Distance Establish a standard “stick” for the unit of distance. Measure how many sticks fit between two points. take the path that gives the smallest # Subdivide the stick into subunits for more precision.

9. The Metre After the French revolution they decided to use the earth as the standard hopefully neutral, no objections Define N. Pole to Equator = 10 000 000 m through Paris (not so neutral?) they actually measured the distance from Dunkirk (51°N) to Barcelona (41°N) and figured it out.

10. Triangulation