PHYS 211Lecture 4 Outline of Last Lecture I. Scalar Quantitiesa. Speed – Instantaneous and AverageI. Vector Quantitiesa. Displacementb. VelocityOutline of Current LectureI. Accleration Current LectureI. AccelerationAcceleration: the rate at which velocity changesAverage acceleration: the average rate at which velocity changesDifferent ways to write the equation for average accelerationThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Kinematic equations for when acceleration is constantYou are driving a car that can go from 0 to 60 in 2.5 seconds. What is your average accerleration in m/s2? (1609m/mi)(1hr/60min)(1min/60sec) = 28.6m/s Vf = 28.6m/s a = ∆v/∆t a = (vf – vi)/t (28.6m/s – 0m/s)/2.5s =
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