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# Over the first 100 m you accelerate at 120 ms2 up to

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Unformatted text preview: How far from the bench did you get before being caught? – How long did it take the old lady catch you? v (t ) x (t ) vi xi at vi t 1 2 at2 PHYS 1L03, Fall 2013, McMaster University, R. Nejat v (t ) 2 i vi2 initial 2 a ( x xi ) PHYS 1L03, Fall 2013, McMaster University, R. Nejat 13 One-Dimensional Motion One-Dimensional Motion Example (Free Fall): • An object initially at rest falls vertically from a tree branch, h = 4.0 m above the ground. Neglecting air resistance, how long does the object travel through air? Example (Free Fall): v (t ) x (t ) v (t ) 2 vi at xi vi t vi2 a 1 2 at g 2 2 a ( x xi ) i g 9.8 m / s 2 initial PHYS 1L03, Fall 2013, McMaster University, R. Nejat PHYS 1L03, Fall 2013, McMaster University, R. Nejat One-Dimensional Motion One-Dimensional Motion Example (Free Fall): • A volcano shoots out blobs of molten lava (lava bombs) from its summit? If the time for it to rise and fall back to its launch height is 4.8 s, what is its initial speed? Example (Free Fall): v (t ) x (t ) v (t ) 2 vi at xi vi t vi2 a 1 2 at 2 a ( x xi ) PHYS 1L03, Fall 2013, McMaster...
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## This document was uploaded on 03/16/2014 for the course PHYSCS 1L03 at McMaster University.

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