Lecture 3 Jan. 25 - Review: Sign of Acceleration v = vf -...

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Physics 102 Lecture 3 Slide 1 Department of Physics, University of Arizona Review: Sign of Acceleration Direction v = v f - v o + - “Speed up” “Slow down” v f - v o = 5 – 0 > 0 v > 0 a (+) v f - v o = (-5) – 0 < 0 v < 0 a (-) v f - v o = 0 – 5 < 0 v < 0 a (+) a (-) v f - v o = 0 – (- 5) > 0 v > 0
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Physics 102 Lecture 3 Slide 2 Department of Physics, University of Arizona Lecture 3: Free Fall Motivation: Relevant to motion of any falling object Building foundation for the study of projectile motion and gravitation Objectives: Use equations for constant acceleration to derive relationships for free fall Use these relationships to calculate heights, falling times, velocities etc. Hammer and Feather
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Physics 102 Lecture 3 Slide 3 Department of Physics, University of Arizona Lecture 3: Free Fall Experimental Fact: In the absence of air resistance, all objects near the earth’s surface fall with the same constant acceleration of 9.80 m/s 2 downward. The vertical (
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Lecture 3 Jan. 25 - Review: Sign of Acceleration v = vf -...

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