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Unformatted text preview: 1 Lecture 6, 1/31/00 Phy1221 Winter 00 1 Course Announcements (cont.) Final Exam: Thursday, March 16th, 3:30 PM Midterm Exam : Monday, Feb 7, 9:15 (In class): covers through Ch. 5 mixture of numerical and conceptual problems review sessions TBA Current Assignments: Reading quiz 4 (due today) HW 3-final : (due 4:00 PM Tuesday). Upcoming Assignments : HW 4-Preclass: Ch 5, Ques. 8, 11, 13; Probs. 6,9,17,21,39,40 due before class on Friday Lecture 6, 1/31/00 Phy1221 Winter 00 2 Relative Motion (from last week) Need to make sure that you use inertial reference frames, i.e. frames that are not accelerating Acceleration is the same in all inertial reference frames: The velocity of the first frame seen from the second is just the negative of the second seen from the first (common sense): PB PA a a = AB BA v v - = 2 Lecture 6, 1/31/00 Phy1221 Winter 00 3 Newtons First Law Unless they are acted upon by an external force, objects at rest will stay at rest, and object in motion will stay in motion with a...
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- Winter '00