KinematicsF2013-Ave+[Compatibility+Mode]

Is a rate of change of velocity depends on both the

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Unformatted text preview: ge of velocity. • Depends on both the velocity and the time interval. PHYS 1L03, Fall 2013, McMaster University, R. Nejat PHYS 1L03, Fall 2013, McMaster University, R. Nejat One-Dimensional Motion • Average Acceleration: aaverage vf vi tf ti v t vf Xf • Instantaneous Acceleration: a inst lim t 0 v t Xi vi ti t fi PHYS 1L03, Fall 2013, McMaster University, R. Nejat 9 One-Dimensional Motion One-Dimensional Motion • Average Acceleration: aaverage v2 t2 v1 t1 • Average Acceleration: v t v2 (omitting vector signs) • Instantaneous Acceleration: ainst lim t 0 v t v1 (omitting vector signs) • Is represented by the slope of the straight line connecting two points on the velocity-versus-time graph. v2 v1 t 2 t1 aavg v t velocity B v2 velocity v A v1 t2 t1 time • Unit of a is m/s2 PHYS 1L03, Fall 2013, McMaster University, R. Nejat PHYS 1L03, Fall 2013, McMaster University, R. Nejat One-Dimensional Motion One-Dimensional Motion • Instantaneous Acceleration: ainst • Is represented by the slope of a line tangent to the curve on the velocity-versustime graph. lim t aA A B aB 0 v t Example: • Graphs o...
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