Introduction and Kinematics

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Presentation transcript:

Introduction and Kinematics Physics 201 Lecture 1 Introduction and Kinematics

Democritus was right – ultimately, it is all mechanics Large Classical Mechanics Classical Field Theory Newton Maxwell Einstein Slow Fast Schrodinger Dirac Feynman Quantum Mechanics Quantum Field Theory Small

Proton, neutron, electron, photon What we know now Cosmology What it looks like What it is Planetary motion Motion under gravitational force Magnetism Electric charge in motion Sound Wave motion of air Heat Random motion of molecules Phase change Rearrangement of molecular structure Light Flood of quantum photons Elasticity Static electric force between molecules Solar system Earth science Our everyday world of solids, liquids, gases 92 elements Proton, neutron, electron, photon Particle zoo?

Units and measurement Electric current Temperature Distance Duration http://photo-dictionary.com/photofiles/list/620/4139ruler.jpg http://remodelista.com/img/sub/uimg/janet/12-2010/Howard-miller-clock.jpg http://www.weightliftingequipment.co/img/upload/barbell-weights.JPG http://static.ddmcdn.com/gif/lightning-gallery-18.jpg http://www.taylorusa.com/media/catalog/product/cache/1/image/5e06319eda06f020e43594a9c230972d/5/1/5154_2-detail.jpg http://reddogreport.com/wp-content/uploads/2011/02/Light-Bulb-600x719.jpg http://www.dualmfg.com/images/cycle/gravel-pile-spot.jpg Duration Luminosity Molecular count Weight / Mass

SI units and the metric system

Velocity is change in position over time http://images.photoresearchers.com/photos/preview/7w/7w5841.jpg

Acceleration is the rate at which velocity changes: speed or direction http://www.daviddarling.info/images/Pioneer_Voyager_trajectories.jpg

Constant acceleration yields time-squared motion 1 2 3 4 5 6 7 8 9 10   12 14 16 18 20 15 21 24 27 30 28 32 36 40 25 35 45 50 11 42 48 54 60 13 49 56 63 70 64 72 80 17 81 90 19 100

Objects in “free-fall” experience constant acceleration Aside: What about terminal velocity? http://farm4.staticflickr.com/3609/3383701804_eb59c05e83_z.jpg?zz=1

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