Physics114A_L09 - Physics 114B - Mechanics Lecture 9...

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Unformatted text preview: Physics 114B - Mechanics Lecture 9 (Walker: 4.3-5) 2D Kinematics Examples January 19, 2012 John G. Cramer Professor Emeritus, Department of Physics B451 PAB jcramer@uw.edu January 19, 2012 Physics 114A - Lecture 9 2/35 Announcements Homework Assignments #2 and #3 are now available on WebAssign. Assignment #2 is due at 11:59 PM on Thursday, January 19 (tonight). Assignment #3 is due at 11:59 PM on Thursday, January 26. Register your clicker using the Clicker link on the Physics 114A Syllabus page. We will have our first Midterm Exam on Friday, January 20. It will have 75 points of multiple-choice questions based on end-of-chapter problems, and a 25 point free-response question testing qualitative understanding of Chapters 1-4. Exam I will have assigned seating . Seat assignments will be posted before the exam on the entry doors. If you would like to request a left-handed seat, a right-handed aisle seat, a front-row seat, or need a seat at the tables in the back (4 seats only), send me E-mail ASAP. January 19, 2012 Physics 114A - Lecture 9 3/35 Physics 114A - Introduction to Mechanics - Winter-2012 Lecture: Professor John G. Cramer Textbook: Physics, (Edition: UW Vol. 1 or Complete 4th), James S. Walker Week Date L# Lecture Topic Pages Slides Reading HW Due Lab 1 2-Jan-12 H1 New Year Holiday No Lab 1st week 3-Jan-12 1 Introduction to Physics 12 21 Chapter 1 5-Jan-12 2 Position & Velocity 8 22 2-1 to 2-3 No HW 6-Jan-12 3 Velocity & Acceleration 10 25 2-4 to 2-5 2 9-Jan-12 4 Equations of Motion 9 20 2-6 to 2-7 1-D Kinematics 10-Jan-12 5 Vectors 8 24 3-1 to 3-3 12-Jan-12 6 r, v & a Vectors 5 24 3-4 to 3-5 HW1 13-Jan-12 7 Relative Motion 3 18 3-6 3 16-Jan-12 H2 MLK Birthhday Holiday Free Fall & Projectiles 17-Jan- 12 8 2D Motion Basics 5 20 4-1 to 4-2 19-Jan-12 9 2D Examples 13 35 4-3 to 4-5 HW2 20-Jan-12 E1 EXAM 1 - Chapters 1-4 Lecture Schedule (Part 1) We are here. January 18, 2011 Physics 114A - Lecture 9 4/38 ( 29 f i 1 lim N s k t k s s v t = = + Finding Position from Velocity f i i f area under the velocity curve between and s s s v t t = + January 19, 2012 Physics 114A - Lecture 9 5/35 Solution: The ne t dis tanc e tra ve le d is the are a unde r the ve lo c ity c urve s ho wn in b lue . This is a triang le with s ide s 12 m /s and 3.0 s . The are a o f this triang le is : A = (12 m /s )(3 s ) = Drag Racers Displacement The figure shows the velocity of a drag racer. How far does the racer move during the first 3.0 s? January 19, 2012 Physics 114A - Lecture 9 6/35 Upon graduation, a joyful student throws her cap straight up in the air with an initial speed of 14.7 m/s. Given that its acceleration has a magnitude of 9.81 m/s 2...
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This note was uploaded on 01/20/2012 for the course PHYSICS 114A taught by Professor Johncramer during the Winter '12 term at University of Washington.

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Physics114A_L09 - Physics 114B - Mechanics Lecture 9...

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