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Physics 114 Week 1 Notes

by: Rathtairis

Physics 114 Week 1 Notes Phys 114

Marketplace > Western Washington University > Physics > Phys 114 > Physics 114 Week 1 Notes
Western Washington University
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About this Document

Notes covering the first three days of class, as well as the first full week.
Principals of Physics I
Jennifer M. Villalva
Class Notes
acceleration, velocity, gravity




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This 2 page Class Notes was uploaded by Rathtairis on Monday October 3, 2016. The Class Notes belongs to Phys 114 at Western Washington University taught by Jennifer M. Villalva in Fall 2016. Since its upload, it has received 2 views. For similar materials see Principals of Physics I in Physics at Western Washington University.

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Date Created: 10/03/16
Physics 114 – Professor Villalva Instructor prefers to be addressed as Professor V/Mrs. V Test material pulled from both text and in-class lectures; instructor will occasionally hint at relevant material, but not all material will be covered in lecture -- Physics- Greek for “nature”; originally used in natural philosophy, observation based Eventually organized around a collection of natural laws Define: The science of matter & energy and how they interact Used to predict how things happen Used to explain why things happen the way they do Fundamental to all areas of science from very large objects to very small particles Isaac Newton – 1642-1727 Developed the Laws of Motion, based on observations by himself & previous scientists – his contributions will cover the majority of this quarter Chapter One Text Notes: Learning physics is about problem solving; using reasoning, relationships, and quantitative problems – thus standardized measurements and common rules for significance has been developed Significant Digits – number of digits that are meaningful in terms of accuracy of measurement Rules: 1) (Multiplication and Division) Number of SigFigs limited by the least “accurate” measurement in the equation: e.g. 1.23 * 2.0 = 2.46 = 2.5 2) (Addition and Subtraction) Number of SigFigs determined by the location of the least “accurate” measurement in the equation: e.g. 4.52 + 1.2 = 5.72 = 5.7 3) Zeros after the decimal point are not considered significant 0.00000023 = 2 SigFigs 4) Zeros as placeholders without a decimal point are not considered significant e.g. 1,337,000 = 4SF System of International Units (SI) – standardized measurement units: meters, seconds, kilograms Dimensional quantities – Length (L), Time (T), Mass (M) Vector – a value that has both a magnitude and a direction, represented by an arrow Important Equations At constant velocity: x = vt + x Positioning 0 Velocity is found by: v = Δx Δt At constant acceleration: 2 x = ½ at + v t 0 x 0 vF= at + v o 2 2 vf= v 0 + 2aΔx The area under the curve (integrals for those of you who have taken calc) of a velocity graph can be used to find the displacement/position graph 2 Gravity = -9.8 m/s (a constant acceleration)


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