Physics 2130 PHYS 2130-005
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This 6 page Study Guide was uploaded by Erika Scholl on Friday September 9, 2016. The Study Guide belongs to PHYS 2130-005 at University of Toledo taught by Kathy Jean Shan in Winter 2016. Since its upload, it has received 26 views. For similar materials see Physics-Sci & Eng Majors I-L2 in Physics at University of Toledo.
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Date Created: 09/09/16
PHYSICS 2130 STUDY GUIDE Vector has a direction (+ or ) Displacement is represented by x Velocity and acceleration has direction. Speed and distance do not have direction. Instant velocity is the slope of the tangent line. Acceleration: If V and A are both + or , it is speeding up!! If they are opposite, it is slowing down! Equations: x(t) = x˳ + v˳t + 1/2a(t^2) v(t) = v˳ + at v^2 = v˳^2 + 2ax y y˳ = v˳y(t) + ½ay(t^2) Acceleration has nothing to do with the path it’s on. Acceleration in the Y direction is gravity (9.8m/s^2). Unit vectors have a magnitude of 1. i j k are vectors for x y z. ax = a cosϴ ay = a sinϴ a is the magnitude ϴ is the angle, ccw is positive, cw is negative. Cross product: A x B = ABsinϴ r is a position vector. r = xi + yj + zk velocity = dr/dt = (dx/dt)i + (dx/dt)j + (dx/dt)k Reference frames: Xpa = Xpb + Xba Ypa = Ypb +Yba Rpa = Rpb + Rba Vpa = Vpb + Vba PROJECTILE MOTION: is two dimensional motion. Ignore air resistance. If it is symmetric, the time up = time down. ay = 9.8 m/s^2 ax = 0 at h, velocity is 0. Acceleration is not 0! GRAPHS:
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