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Class 9 – Review of motion in 2D and 3D Chapter 4 - Monday September 13th

Class 9 – Review of motion in 2D and 3D Chapter 4 - Monday September 13th. Exam instructions Brief review Example problems. Reading: pages 58 thru 75 (chapter 4) in HRW Read and understand the sample problems. Exam tonight: 8:20-10:20pm. WebAssign is NO LONGER FREE!! You must register.

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Class 9 – Review of motion in 2D and 3D Chapter 4 - Monday September 13th

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  1. Class 9 – Review of motion in 2D and 3D Chapter 4 - Monday September 13th • Exam instructions • Brief review • Example problems Reading: pages 58 thru 75 (chapter 4) in HRW Read and understand the sample problems • Exam tonight: 8:20-10:20pm WebAssign is NO LONGER FREE!! You must register

  2. Two-dimensional kinematics Position: Displacement: Velocity: Acceleration:

  3. Projectile motion

  4. Uniform circular motion • Since v does not change, the acceleration must be perpendicular to the velocity. • Although v does not change, the direction of the motion does, i.e. the velocity (a vector) changes. • Thus, there is an acceleration associated with the motion. • We call this a centripetal acceleration.

  5. Analyzing the motion Uniform motion:

  6. Analyzing the motion

  7. Acceleration

  8. Relative motion Position: Velocity: Acceleration (if frame B is “inertial”):

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