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Week of January 26, 1998
Lessons 3One-dimensional Dynamics (invisible Forces)
-observe friction w/ visible drag as a "passive force"
-postulate friction as force
-observe vertical fall
-postulate constant gravitational force
-observe effects of strings and surfaces
-postulate Newton's third law to explain a= 0 cases
-postulate T and N as passive forces

Week of February 2, 1998
Lesson 4Two-dimensional Dynamics
-observe vector combination of forces
-discover rules for free body diagrams and two-dimensional problem solving
-apply Newton's laws to projectile, circular and inclined plane motion