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by: Erika Scholl

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6

# Physics 2130 PHYS 2130-005

Erika Scholl
Toledo
GPA 3.367

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This is the first exam study guide.
COURSE
Physics-Sci & Eng Majors I-L2
PROF.
Kathy Jean Shan
TYPE
Study Guide
PAGES
6
WORDS
CONCEPTS
Physics
KARMA
50 ?

## Popular in Physics

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 + 2ax 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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