PHYS 1080 Final: Physics Final Review.docx
4 Dec 2012
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Document Summary
Relationship between object"s motion (kinematics) and forces acting on it (newton"s laws) If a=0: v=vo and x=xo + vot displacement is positive. Gravity influences motion with constant vertical acceleration g= 9. 8m/s2, motion in the horizontal and vertical direction are independent of each other. Pen swipe: swipe over gives cos, away gives sin; put pen over vector r and then rotate it from there to component of interest. Motion occurs at constant velocity but total motion is due to contribution from 2 factors. Someone trying to swim directly across a river with a current. Usually contain 3 velocities: identify 2 and add to determine 3rd (resultant) Wind speed or water speed not likely resultant velocity. Combine to give resultant or net motion. Interaction between 2 bodies: an object and an agent. Without a force there is no acceleration. Can be produced with or without contact. Types: gravitational, normal force, tension, friction, magnetic/electric.
