PHYS 2001 Lecture : Chap 2 Notes
Document Summary
Chapter 2 (cid:1) (cid:2) (cid:1)(cid:3) (cid:4) (cid:5)(cid:3)(cid:1)(cid:6) (cid:4) (cid:7) (cid:8)(cid:9)(cid:1)(cid:6)(cid:8) (cid:9)(cid:10) (cid:2) (cid:11)(cid:12) The description of motion without regard to what causes the motion. The relationship between motion and what causes changes in that motion. Specifically, our goal is to describe the motion of an object along one spatial direction. Specify an object"s position (cid:13)((cid:15)) on the (cid:13)-axis at all times. 1: define the object"s displacement (cid:13) as the change in its position, understand how the object"s displacement can depend upon time. Displacement is a vector that points from an object"s initial position to the object"s final position. Mathematically, displacement is (cid:1) (cid:2) (cid:1)(cid:8) (cid:11) (cid:1)(cid:7). The si units of displacement are meters (m). : at time (cid:15) (cid:2) (cid:15)(cid:19), a jogger"s position relative to some fixed origin is (cid:13)(cid:19). At some later time, (cid:15) (cid:2) (cid:15)(cid:20), her position relative to the origin is (cid:13)(cid:20).
