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## Week 4 &5 Notes

by: Kristianna Notetaker

6

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3

# Week 4 &5 Notes PHY 2460 - 02

Kristianna Notetaker
WSU

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## About this Document

These notes cover weeks 4 and 5.
COURSE
Concepts in Physics for Middle Childhood Education
PROF.
Joseph Childers
TYPE
Class Notes
PAGES
3
WORDS
CONCEPTS
Dot, diagram, Graphs, motion, Math, Physics, acceleration, velocity
KARMA
25 ?

## Popular in Education, Physics

This 3 page Class Notes was uploaded by Kristianna Notetaker on Monday October 3, 2016. The Class Notes belongs to PHY 2460 - 02 at Wright State University taught by Joseph Childers in Fall 2016. Since its upload, it has received 6 views. For similar materials see Concepts in Physics for Middle Childhood Education in Education, Physics at Wright State University.

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Date Created: 10/03/16
• Graphs o Velocity vs. Time Graph § Straight horizontal line means “constant velocity” v t § Straight sloped line means “constant acceleration” (acceleration is a change in velocity) v t o Position vs. Time Graph § Straight horizontal line means “at rest” x t § Straight sloped line means “constant velocity” x t • Key Equations o Velocity (v) = Δx/Δt o Acceleration (a) = Δv/Δt • Dot Diagrams o There is one dot per time unit. o Each dot shows the position at that time. o Motion diagrams include velocity arrows between the dots. Example: t X A X B X A= 5t X B= 52 -8t 0 0 52 X A= X B 1 5 44 5t =52 -8t 2 10 36 13t =52 3 15 28 t = 4 4 20 20 X A= X =B5 4 =20 X B v X A v 0 5 10 15 20 25 30 35 40 45 50 55 • Change in velocity arrows for motion diagram o Have a current and previous arrow. o Make a copy of the precious arrow. § To scale § Tail-to-tail with current arrow o The Δv arrow goes from head of copy to head of current **v 1copy = previous v length **Δv = how much is left Example: t x Δt Δx v Δv a 0 -- -- -- -- -- -- 1 13 1 13 13 -- -- 2 37 1 24 24 11 11 3 69.5 1 32.5 32.5 8.5 8.5 4 106.5 1 37 37 4.5 4.5 5 150.5 1 44 44 7 7 V 2copy Δv 2-3 V 1copy Δv 1-2 V1 V 2 V 3 0 10 20 30 40 50 60 70

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