Locomotion-Jan24-Ave - One-Dimensional Motion Locomotion...

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Winter 2010, McMaster University, R. Nejat Locomotion Kinematics Concepts: Acceleration Motion in one Dimension Free Fall Physiological Detection of Acceleration Chapter 2 Pages: 16-23, 27-29 PHYS 1L03, Winter 2010, McMaster University, R. Nejat One-Dimensional Motion Acceleration: • is a vector . • indicates how fast and in what direction an object’s velocity is changing. • is a rate of change of velocity. • Depends on both the velocity and the time interval. PHYS 1L03, Winter 2010, McMaster University, R. Nejat One-Dimensional Motion • Average Acceleration: • Instantaneous Acceleration: t v t t v v a i f i f average Δ Δ = = r r r t v a t inst Δ Δ = Δ r r 0 lim v f X i i t fi t v i X f PHYS 1L03, Winter 2010, McMaster University, R. Nejat One-Dimensional Motion • Average Acceleration: • Instantaneous Acceleration: • Unit of a is m/s 2 t v t t v v a average Δ Δ = = 1 2 1 2 t v a t inst Δ Δ = Δ 0 lim v 1 v 2 ( omitting vector signs ) ( omitting vector signs ) PHYS 1L03, Winter 2010, McMaster University, R. Nejat One-Dimensional Motion • Average Acceleration: t v t t v v a avg Δ Δ = = 1 2 1 2 • Is represented by the slope of the straight line connecting two points on the velocity-versus-time graph. velocity v time velocity v 1 B v 2 t 1 A t 2 PHYS 1L03, Winter 2010, McMaster University, R. Nejat One-Dimensional Motion • Instantaneous Acceleration: t v a t inst Δ Δ = Δ 0 lim • Is represented by the slope of a line
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Locomotion-Jan24-Ave - One-Dimensional Motion Locomotion...

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