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2D and 3D Motion Review - Chapter 4

This review covers motion in 2D and 3D, including concepts like position, displacement, velocity, acceleration, projectile motion, and uniform circular motion. Sample problems are provided to help understand the material. Exam tonight from 8:20-10:20pm. WebAssign registration required.

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2D and 3D Motion Review - Chapter 4

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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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