Motion Introduction Section 0 Lecture 1 Slide 1 Lab/Demo 1 Slide 1 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Physics of Technology PHYS 1800 Laboratory/Demonstrations 1 Motion

Introduction Section 0 Lecture 1 Slide 2 Lab/Demo 1 Slide 2 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Describing Motion Position—where you are in space (D-meter) Speed—how fast position is changing with time (DT -1 or m/s) Acceleration—how fast speed is changing with time (DT -2 or m/s 2 ) (we will talk about direction and vectors later)

Motion Introduction Section 0 Lecture 1 Slide 3 Lab/Demo 1 Slide 3 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Graphing Motion Time  Distance  Time  Speed  Time  Acceleration  Objectives: Understand what position, speed and acceleration are Learn to graph them versus time Develop some intuition for common situations Consider: Standing still Constant speed (different magnitudes) Constant acceleration (different magnitudes) Constant deceleration (different magnitudes) Arbitrary motion

Motion Introduction Section 0 Lecture 1 Slide 4 Lab/Demo 1 Slide 4 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Standing Still Time  Distance  Time  Speed  Time  Acceleration 

Motion Introduction Section 0 Lecture 1 Slide 5 Lab/Demo 1 Slide 5 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Standing Still Time  Distance  Time  Speed  Time  Acceleration 

Motion Introduction Section 0 Lecture 1 Slide 6 Lab/Demo 1 Slide 6 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Constant Speed Time  Distance  Time  Speed  Time  Acceleration 

Motion Introduction Section 0 Lecture 1 Slide 7 Lab/Demo 1 Slide 7 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Constant Speed Time  Distance  Time  Speed  Time  Acceleration 

Motion Introduction Section 0 Lecture 1 Slide 8 Lab/Demo 1 Slide 8 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Constant Speed Time  Distance  Time  Speed  Time  Acceleration 

Motion Introduction Section 0 Lecture 1 Slide 9 Lab/Demo 1 Slide 9 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Constant Acceleration Time  Distance  Time  Speed  Time  Acceleration 

Motion Introduction Section 0 Lecture 1 Slide 10 Lab/Demo 1 Slide 10 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Constant Speed Time  Distance  Time  Speed  Time  Acceleration 

Motion Introduction Section 0 Lecture 1 Slide 11 Lab/Demo 1 Slide 11 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Arbitrary Acceleration Time  Distance  Time  Speed  Time  Acceleration  Walk slowly toward the wall at slow constant speed Stop for 2 sec just before the wall Run back to where you started, accelerating constantly Move back half way to wall at fast constant speed Jump up and down Spin around

Motion Introduction Section 0 Lecture 1 Slide 12 Lab/Demo 1 Slide 12 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Units of Motion Need a distance unit: m, cm, mm, km ft, in, mi light years, furlongs Need a time unit: sec, min, hr, day, year ms, ns, fs fortnights Speed: A distance divided by time (DT -1 ) m/s, mi/hr, mm/yr, furlongs/fortnight Acceleration: A distance divided by time squared (DT -2 ) A speed divided by time (DT -2 ) m/s 2, mi/hr 2, mm/yr 2, furlongs/fortnight 2

Motion Introduction Section 0 Lecture 1 Slide 13 Lab/Demo 1 Slide 13 INTRODUCTION TO Modern Physics PHYX 2710 Fall 2004 Physics of Technology—PHYS 1800 Spring 2009 Physics of Technology Next Recitation: First homework set on motion Tuesday 1:30-2:45 ESLC 46 Review Chapter 2 Next Class: Friday 10:30-11:20 BUS 318 room.