Definitions of Time Newton: “I do not define time, space, place and motion, as being well known to all” Time (Merriam–Webster dictionary): A period during.

Slides:

Advertisements

Similar presentations

a. acceleration b. length c. time d. area

Advertisements

Context and definition

25 Vibrations and Waves Test. 25 Vibrations and Waves Waves transmit energy through space and time.

Introduction to Physics

The properties of matter must be measured correctly and reported without ambiguity.

Chapter 2-2 Units of Measurement

Introduction Lecturer: Professor Stephen T. Thornton.

Chapter 1 Introduction, Units, and Dimensional Analysis

“The Basics”.  SI = Système Internationale d’Unités  What we know as the “Metric System”  Units are standardized and regulated by two organizations:

Motion I Kinematics and Newton’s Laws Basic Quantities to Describe Motion Space (where are you) Space (where are you)

Speed 4th Grade science S4P3b.

 Convert length units within and between measurement systems.

C H A P T E R 1 Introduction and Mathematical Concepts

SI - System International The Metric System. How high is the ceiling?

Chapter 1 Pretest. 1. THE STANDARD UNIT OF MASS IS THE: A) GRAM, B) KILOGRAM, C) POUND.

PHYSICS AND MEASUREMENT. FUNDAMENTAL QUANTITIES SI units:  Time – second  Mass – Kilogram  Length – meter.

Chapter 1 Introduction What is physics? Physics deals with the behavior and composition of matter and its interactions at the most fundamental level. Curiosity.

Metrics and Measurement Be sure to look at the helpful links on the unit page on the website if you need extra practice ! Syll. Statements –

If the displacement of an object, x, is related to velocity, v, according to the relation x = Av, the constant, A, has the dimension of which of the following?

Reference Book is.

Definitions of Time Newton: “I do not define time, space, place and motion, as being well known to all” Time (Merriam–Webster dictionary): A period during.

Frame of Reference.

Engineering Mechanics

Motion I Kinematics and Newton’s Laws. Basic Quantities to Describe Motion Space (where are you) Space (where are you) Time (when are you there) Time.

UNITS OF MEASUREMENT Using and Converting. Introduction ■Scientists use the International System of Units (SI), which is an extension of the metric system.

PART 1 MECHANICS. Chapter 1 ： GENERAL INTRODUCTION ( MEASUREMENT) 1.1The Development of Science 1.1.1Definition of physics A science to study matter and.

Sinai University Faculty of Engineering Science Department of Basic Science 11/23/

1 Vibrations & Waves Test Review Find a friend and a whiteboard for this activity!

L2-s1,12 Physics 114 – Lecture 2 Chapter 1 Read: §1.1 The Nature of Science §1.2 Physics and Its Relation to Other Fields §1.3 Models, Theories and Laws.

Chapter 1 Measurement. We measure things (such as weight, time, length, speed, etc.) We use tools (rulers, clocks, speedometers, etc.) to measure things.

CHAPTER 1 PHYSICS FOR JUNIOR HIGH SCHOOL VII. Something measurable  stated in number (quantitative), for instance: length, mass, time, temperature, etc.

If the displacement of an object, x, is related to velocity, v, according to the relation x = Av, the constant, A, has the dimension of which of the following?

Ch 8 : Conservation of Linear Momentum 1.Linear momentum and conservation 2.Kinetic Energy 3.Collision 1 dim inelastic and elastic nut for 2 dim only inellastic.

Up to the late 1700’s, every country and/or town had their own way of measuring and comparing things….. ….in France alone there were 23 temperature scales.

Force and Motion Laughlin’s Science Class. Motion Motion refers to the change in position of an object over a period of time.

Lecture Outline Chapter 1 Physics, 4 th Edition James S. Walker Copyright © 2010 Pearson Education, Inc.

Standards of Measurement Chapter 1 Section 2. Units and Standards Standard-an exact quantity that is agreed upon to use for comparison hands feet piece.

GENERAL PHYSICS II Math. Edu. Program Yohanes Edi Gunanto TC - UPH.

NEWTON’S 2 ND LAW OF MOTION By: Per.7. WHAT IS IT? Newton's second law Of Motion Newton's second law Of Motion can be formally stated as follows: The.

Newton’s Second Law of Motion. 2 nd Law of Motion  The net (total) force of an object is equal to the product of its acceleration and its mass.  Force.

Chapter 1 Measurement. We measure things (such as weight, time, length, speed, etc.) We use tools (rulers, clocks, speedometers, etc.) to measure things.

Newton’s Second Law Speed Velocity Acceleration Distance traveled in a given amount of time – km/ h The speed of an object in a particular direction –

“The Basics”.  SI = Système Internationale d’Unités  What we know as the “Metric System”  Units are standardized and regulated by two organizations:

Unit 1 Introduction Measurement To make a measurement, we must...  know what we are trying to measure  have some standard with which to compare 

Chapter 1 Measurement. 1.2 Measuring things We measure each quantity by its own “unit” or by comparison with a standard. A unit is a measure of a quantity.

MOTION Motion: Change in position over time and is described by speed, velocity and acceleration.

Chapter 1 - Measurement Wednesday August 26th The International system of units (SI) Prefixes for SI units Orders of magnitude Changing units Length, time.

A satellite orbits the earth with constant speed at height above the surface equal to the earth’s radius. The magnitude of the satellite’s acceleration.

Sinai University Faculty of Engineering Science Department of Basic Science W 1-Ch1 1.

Physics and Nature Physics studies the fundamental laws of nature. It is based on observations and experimentation, which lead to laws and theories. We.

Speed, Velocity, Acceleration Notes. Speed (Distance ÷ time)

Measuring Simple Harmonic Motion

Physics deals with objects ranging in size from the very smallest…

Kinematics and Newton’s Laws

Lecture Outline Chapter 1 Physics, 4th Edition James S. Walker

Types of quantities There are 2 categories of Measurable quantities to which all other things belong. They may be either, fundamental quantities which.

Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.

Physics and Physical Measurement

Matter and Measurement Vocabulary

Measuring Simple Harmonic Motion

C H A P T E R 1 Introduction and Mathematical Concepts

Drawing and Examples (2-3) Dictionary Definition

Types of quantities There are 2 categories of Measurable quantities to which all other things belong. They may be either, fundamental quantities which.

Lecture Outline Chapter 1 Physics, 4th Edition James S. Walker

The Fundamental Physical Quantities

Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.

Presentation transcript:

Definitions of Time Newton: “I do not define time, space, place and motion, as being well known to all” Time (Merriam–Webster dictionary): A period during which an action, process, or condition exists or continues. Period (Merriam–Webster dictionary): An extent of time.

Definitions of Distance Newton: “I do not define time, space, place and motion, as being well known to all.” Length (MW): a measured distance or dimension Distance (MW): a measure of separation in space Measure (MW): the dimensions... of something ascertained by measuring Dimension (MW): measurement of extension (as in length)

“God’s Coordinate System” “Absolute, true, and mathematical time... flows equably without regard to anything external; relative, apparent, and common time is some sensible and external measure of (time) by the means of motion, which is commonly used instead of true time; such as an hour, day” “Absolute space.. without regard to anything external, remains always similar and immovable. Relative space is some movable dimension or measure of the absolute spaces... Absolute and relative space, are the same in figure and magnitude”

Evolution of the meter 1 meter = 1 ten–millionth of the distance from the equator to the North Pole Distance between scratches on a bar kept in Serves, France 1,650, wavelengths of orange light from 86 Kr. One inch = 2.54 cm exactly

Evolution of the second One second = 1/86,400 of a day Amount of time it takes a pendulum one meter long to swing from one side to the other 9, 192, 631, 770 transitions between the hyperfine levels in 133 Cs. (1967) Means one 133 Cs vibration is 109 ps (picoseconds)

Derived Quantities Speed = distance ÷ time Acceleration = speed ÷ time Force = mass × acceleration (Newtons) Energy = Force × distance

Speed of light is special c = 3 × 10 8 m/s = 186,000 miles/sec (measurement) Define c ≡ 299, 792, 458 m/s exactly One meter is distance light travels in 1/299,792,458 seconds ( = 3 ⅓ ns ) ( = Cs vibrations).

Modern Definitions of Standards 1 second = 9, 192, 631, 770 transitions in 133 Cs Speed of light = 299, 792, 458 m/s ≈ 3 × 10 8 m/s. 1 kilgoram is the mass of a standard bar in France 1 meter = distance light moves in ≈ 3⅓ ns. (derived)