lecture4_09 - Phy 2053 Announcements Homework 1 due Jan 21...

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1 Phy 2053 Announcements ± Homework 1 due Jan 21 is posted in webassign. It will count towards course grade. ± 3 more days to register your code in webassign ± Yellow book (past exams and solutions) available at Target Copy for $16 ± Should have received email listing your clicker response. Clicker questions will count towards course grade starting Jan 27. ± Optional solution manual: a limited number of copies will be available today at the UF bookstore, at ~ $54. It contains solutions to some but not all of the problems at the back of chapters. Kinematic Equations ± Used in situations with uniform acceleration = + o vv a t 2 o at 2 1 t v x + = = +∆ 22 2 o a x (1) (2) (3) t 2 v v t v x f o average + = = Important: use the correct sign for x, v and a. Some examples of Use t 2 v v t v x f o average + = = Acceleration not in equation =+ 2 o a x Time not in equation : o vv a t Displacement not in equation: 2 o at 2 1 t v x + = Final velocity not in equation : Free Fall ± If only force on object moving near surface of the earth is gravity it is in free fall ± Free fall is constant acceleration (same for all objects) ±
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lecture4_09 - Phy 2053 Announcements Homework 1 due Jan 21...

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