Reading Assignment: (3.1)

Slides:

Advertisements

Similar presentations

The Length of a Straight Line Path Between Two Points is the..

Advertisements

Describing Motion Motion Speed & Velocity Acceleration

Conceptual Physics 11th Edition

Chapter 3 Linear Motion.

Chapter 4 Linear Motion.

Chapter 1 Force and motion.

Physics! Motion and Forces Chapter 2 & 3 (Write down wHite writing)

Is the force of friction doing work?. Walking on pavement.

Science CBA #2 Review.

Review for Exam I Please sit in the first six rows

How fast is the butterfly moving? What direction is it moving?

Chapter 4 Linear Motion.

PHYSICS UNIT 1: KINEMATICS (Describing Motion)

Warm Up A particle moves vertically(in inches)along the x-axis according to the position equation x(t) = t4 – 18t2 + 7t – 4, where t represents seconds.

Describing Motion: Kinematics in One Dimension

Chapter 3: Motion in 2 or 3 Dimensions

3-instvelacc Review Three cars are starting on a 30-mile trip. They start at the same time, and arrive ½ hour later. Slow start, then becoming faster Fast.

University Physics: Mechanics Ch4. TWO- AND THREE-DIMENSIONAL MOTION Lecture 4 Dr.-Ing. Erwin Sitompul

Usain Bolt is the world’s fastest man!!!

Chapter 1 Representing Motion.

P. Sci. Chapter 11 Motion.

3.4 Velocity and Other Rates of Change

Please take your exam back and a project contract (1 mins).

Chapter Assessment Questions

Motion Review Physical Science.

Motion in One Dimension

Some helpful distinctions: Distance is the amount of space between two points Position is the location of an object along a real or imaginary line. Example:

Chapter 2: Motion in One Dimension

MOTION IN ONE DIMENSION SEPTEMBER GOAL To describe motion using vocabulary, equations, and graphs.

Ch 2 Velocity ~Motion in One Dimension~. Scalar versus Vector Scalar – quantity that only has magnitude Vector – quantity that has magnitude and direction.

Ch. 10: Motion Unit Integrated Science I Motion in One Dimension.

8.1 The language of motion.

Physics Ch. 3 Position, Speed, and Velocity

Motion Notes Physical Science.

Speed, velocity and acceleration. 1Both Mr Rabbit and Mr Tortoise took the same round trip, but Mr Rabbit slept & returned later.

Motion and Energy Chapter 9.

Physics 221 Chapter 2 Speed Speed = Distance / Time v = d/t.

Units of Chapter 2 Reference Frames and Displacement (2-1) Average Velocity (2-2) Instantaneous Velocity (2-3) Acceleration (2-4) Motion at Constant Acceleration.

INTEGRATED SCIENCE CHAPTER 11.

Chapter 11 Motion.

Chapter 4 MOTION.

Usain Bolt is the world’s fastest man!!!. Physics of Motion We will look at: –Distance –Displacement –Speed First you need to realize that motion is relative…

1 Chapter 6: Motion in a Plane. 2 Position and Velocity in 2-D Displacement Velocity Average velocity Instantaneous velocity Instantaneous acceleration.

Motion in One Dimension Kinematics. Distance vs. Displacement Distance – how far you’ve traveled Scalar quantity - 20 m Displacement – shortest distance.

Motion in One DimensionSection 1 Distance The actual path length traveled by an object in motion A scalar quantity Positive values only.

Ch 2 Velocity ~Motion in One Dimension~. Scalar versus Vector Scalar – quantity that only has magnitude –In the previous slide, which is the scalar? Vector.

 Define the term motion.  Give an example of something in motion.  How do we know an object is in motion?  How do we know if we are in motion even.

Projectiles Horizontal Projection Horizontally: Vertically: Vertical acceleration g  9.8 To investigate the motion of a projectile, its horizontal and.

Chapter Four: Motion  4.1 Position, Speed and Velocity  4.2 Graphs of Motion  4.3 Acceleration.

Usain Bolt is the world’s fastest man!!!

1 Chapter 2 Motion F. Morales. 2 CHAPTER OUTLINE  Motion Motion  Vectors Vectors  History of Motion History of Motion  Speed & Velocity Speed & Velocity.

Principles of Physics.  motion along a straight line path, motion in one dimension  Which way are you headed?  How far did you go?  How fast are you.

Relative Motion Frames of Reference Object or point from which motion is determined Object or point from which motion is determined Most common is the.

Motion Review. What is the difference between an independent and dependent variable?

 An object is in motion if the distance from another object is changing.  A reference point is the starting point you choose to describe the location,

Contents: 4-3E, 4-5E, 4-12E, 4-13E*, 4-28P, 4-29E*,

Relationship between time, displacement, velocity, acceleration. Kinematic.

Uniform Motion.

Introduction to One- Dimensional Motion. Quantities associated with motion Scalar Quantities do not have direction. Scalar quantities only have magnitude.

© 2010 Pearson Education, Inc. 1.What is the difference between speed and velocity? A. Speed is an average quantity while velocity is not. B. Velocity.

P. Sci. Chapter 11 Motion 1. When something changes position 2.

Speed: Average Velocity: Instantaneous Velocity:

Calculating with the “Big Five” a) v = v o + at b) x – x o = v o t + ½at² c) v² = v o ² + 2a(x – x o ) d) x – x o = ½ (v o – v)t e) x – x o = vt - ½at².

Introduction to One-Dimensional Motion

Motion in One Dimension Mechanics – study of the motion of objects and the related concepts of force and energy. Dynamics – deals with why objects move.

2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Distance Displacement Speed Acceleration.

 I can diagram motion by using motion diagrams, particle models, and coordinate systems.

II. Describing Motion Motion Speed & Velocity Acceleration

Kinematics-Part II Kinematics-Part I Velocity: Position: Acceleration:

Presentation transcript:

Reading Assignment: (3.1) What is this vector indicating? A velocity with a 1.5 cm component A displacement with a 1.5 cm component A displacement vector with the components (3.0 cm, 4.5 cm) A position vector to a place at (3.0 cm. 4.5 cm)

Short exercise Draw the picture for the following problem, label, and write an appropriate vector equation: In a dance, you are standing in a spot, and your partner is located 5 steps to the right of you. He takes 5 steps back, 10 steps to his left. Which displacement does he need to undergo to end up beside you?

Short exercise Draw the picture for the following problem, label, and write an appropriate vector equation: You are observing deer. First, you spot the buck 200m at NNE. A few seconds later, he surfaces again north of you. From the time that has passed you determine that the buck can not have further than 80 m away from the first position. What is the buck’s new position vector?

Refinement for average velocity Displacement vector Position vector Time t2 Position vector Time t1 observer defines reference point Average velocity: change in position over time Position vectors: bound to a reference point

You watch a ground hog poke his head out of a hole 20m due North of your position. About 15 s later, he appears at a distance of 45 m West of you. Determine its displacement. Determine its average velocity.

Instantaneous velocity Direction of average velocity? Strategy: bring the two points closer together.

Instantaneous velocity

Instantaneous velocity

Velocity vector? Speed? What are those components?

Average acceleration Change in velocity? Rate of change in velocity? Average acceleration is the average rate of change in instantaneous velocity.

Instantaneous acceleration Change in velocity?

Reading Assignment: (3.2) Which of the particles below has zero acceleration? A baseball is flying beyond the playing field for a home run. A child in a Ferris Wheel being spun around at constant speed. A glider is sliding off an inclined air track. A car is slowing down on an icy straight road.

A ship’s echo on a radar screen is moving according to in which all lengths are in km and times in hours. Find the position at time zero, after 30 min and after 1 hour. Find the velocity as a function of time; then calculate it at time zero, 30 min and 1h. Find the acceleration as a function of time; then calculate the acceleration at zero. 30 min and 1 h. Draw positions into an x-y coordinate system, and indicate the respective velocity and acceleration vectors.

Example A toy train is traveling around a circular track. Its position changes with time as Find the position of the train after 5 s. Find the velocity of the train after 5 s. y x