Speed vs.Velocity Speed (s) is the distance an object travels per unit of time (rate). Speed (s) is the distance an object travels per unit of time (rate).

Slides:

Advertisements

Similar presentations

Motion and Force A. Motion 1. Motion is a change in position

Advertisements

Acceleration. Recall:  Acceleration is the rate at which velocity increases or decreases  If an object is accelerating is not experiencing uniform motion.

Acceleration is the rate of change In velocity.

Table of Contents 2 Chapter 2 Motion.

Chapter 2 Motion in One Dimension

3-3 Velocity and Acceleration. Velocity Average Velocity  Vector measurement that is the change in distance per some change in time  V = Δd / Δt = (d.

Kinematics Demo – Ultrasonic locator Graph representation.

Motion with Constant Acceleration

Acceleration. Changing Motion Objects with changing velocities cover different distances in equal time intervals.

Coach Kelsoe Physics Pages 48–59

Science Starter! Complete the worksheet “Science Starter!” (on teacher’s desk).

2.2 Acceleration Physics A.

Physics 521 Section 2.4 and Chapter 3.  Acceleration is the rate at which the velocity of an object changes.  When the velocity changes ( ) during some.

Lesson 1 Reading Guide - Vocab

Chapter 3 Review Acceleration and Free Fall 1.When an object undergoes a change in velocity, it is said to be ______________. ans: accelerating/decelerating.

Motion In One Dimension by: Heather Britton. Motion In One Dimension Kinematics - the study of how objects move Frame of reference - what you are comparing.

Acceleration & Speed How fast does it go?. Definition of Motion Event that involves a change in the position or location of something.

Kinematics Kinematics is the branch of physics that describes the motion of points, bodies (objects) and systems of bodies (groups of objects) without.

Acceleration Physics 1 Dimensional Motion Chapter 2 Section 2 – pages

Kinematics- Acceleration Chapter 5 (pg ) A Mathematical Model of Motion.

Physics Chp 2. Displacement – is the difference between the intitial position and the final position. It does not matter how far you really went. ex.

A constantly changing velocity. Accelerated Motion.

Acceleration. New Formula Calculating Acceleration - Example Big Papi, from the Boston Red Sox, is stationary at the plate before hitting the ball. He.

 Acceleration is the rate that velocity changes over time.  An object is accelerating if ◦ Its speed changes ◦ Its direction changes ◦ Both its speed.

Velocity - time graph 1. The velocity – time graph shows the motion of a particle for one minute. Calculate each of the following. (a) The acceleration.

Chapter 2 Motion in One Dimension Key Objectives Define Motion in One Dimension Differentiate Distance v Displacement Compare Velocity v Speed Calculate.

STARTER During a road trip, in 6 hours you travel 300 miles. What is your average velocity? Average Velocity = distance travelled/time taken = 300 miles/6.

= constant speed forward = no speed, stopped = constant speed; negative direction Time (s) Distance mDistance m.

Acceleration is the rate of change In velocity.

Acceleration. Acceleration Measures Changes in Velocity The quantity that describes the rate of change of velocity in a given time interval is called.

P. Sci. Chapter 11 Motion & Forces. Motion when something changes position.

VELOCITY & ACCELERATION VELOCITY *Describes both the speed & direction of an object.

Solving Uniform Acceleration Problems. Equations for Uniformly Accelerated Motion variable not involved - d variable not involved - a variable not involved.

3.2 Notes - Acceleration Part A. Objectives  Describe how acceleration, time and velocity are related.  Explain how positive and negative acceleration.

Displacement, Velocity, Constant Acceleration.

Distance & Acceleration. Acceleration: Rate of change of velocity Measures how an objects velocity (or speed) is changing over time a = Change in velocity.

Motion in One Dimension. Displacement  x = x f - x i.

Chapter 2 Motion in One Dimension Section 1 Displacement and Velocity.

Chapter 7 Motion & Forces 7.1 Describing Motion 7.2 Forces.

Speed, Velocity & Acceleration. Speed (s) – rate at which an object is moving Does not depend on direction speed = distance ÷ time (s = d/t) Constant.

READ PAGES Physics Homework. Terms used to describe Physical Quantities Scalar quantities are numbers without any direction Vector quantities that.

1.1Motion and Motion Graphs. Kinematics Terminology Scalar vs. Vector Scalar: quantities that have only a size, but no direction – ie: distance, speed.

Chapter 2 Motion and Speed

One Dimensional Motion Review. Motion In One Dimension Simplest type of motion We set the frame of reference – Example, when we set the origin in a coordinate.

CH. 2 NOTES Abbreviated. Distance vs. Displacement Distance – how far an object travels (meters) Displacement – straight line path between two points.

 Distance vs. Displacement  Speed vs. Velocity.

Acceleration Acceleration is the rate of change of velocity.

Chapter 11: Motion Section 11.3 Acceleration.

Chapter 8 Lesson 1 Describing Motion

Objective SWBAT use velocity-time graphs to determine an object’s acceleration.

Speed & Velocity.

Speed How fast does it go?.

Ch.5, Sec.1 – Measuring Motion

Motion Review Challenge

Velocity and Acceleration

Review Section 2.1 Frame of Reference: Refers to the viewpoint of the problem and con not be changed. Displacement = Δx = Xf - Xi Average Velocity = Δx.

Velocity and Acceleration

Graphing Motion Walk Around

Describing and Measuring Motion

Acceleration Acceleration (a): The rate of change of an object’s velocity. Vector English Translation: Something is speeding up or slowing down.

Velocity and Acceleration

Speed & Velocity.

CH. 2 Notes Abbreviated.

Equations of Motion.

Speed Velocity Acceleration

REVIEW: Motion in 1D Review Questions Sep 26, 2011.

One Dimensional Kinematics Constant Acceleration:

Presentation transcript:

Speed vs.Velocity Speed (s) is the distance an object travels per unit of time (rate). Speed (s) is the distance an object travels per unit of time (rate). Velocity (v) describes the speed and direction of a moving object. Velocity (v) describes the speed and direction of a moving object.

Velocity Objects undergoing motion will either have a constant or changing velocity Objects undergoing motion will either have a constant or changing velocity constant velocity = not speeding up or slowing down. constant velocity = not speeding up or slowing down. changing velocity = speeding up or slowing down. changing velocity = speeding up or slowing down.

Constant / Zero Velocity Distance (m) Time (s) Constant velocity Zero Velocity

Changing Velocity Distance (m) Time (s) Speed up Slow Down

Average Velocity When working with a constant velocity, we use the following equation. When working with a constant velocity, we use the following equation. ν avg =Δx / Δt Velocity Displacement Time Δ = change

Sample Problem What is the velocity of a runner that can travel 10 m in 5 seconds? What is the velocity of a runner that can travel 10 m in 5 seconds? ν avg =Δx / Δt ν avg = 10 m/5 s ν avg = 2 m/s

Acceleration changes velocity Acceleration (a): the rate of change of velocity. Acceleration (a): the rate of change of velocity. Objects can accelerate in both the + and - direction. Objects can accelerate in both the + and - direction. Velocity Time

Accelerating Car Constant acceleration velocity Time

Car on cruise control Zero Acceleration velocity Time

Negative Accelerating Car acceleration velocity Time

Acceleration (cont.) a avg = Δ ν /Δt = v f – v i Δt Δt acceleration SI unit = m/s² Final VelocityInitial Velocity

Sample Problem A car traveling at 7.0 m/s accelerates uniformly to a velocity of 12.0 m/s in 2.0 s. What is the acceleration of the car? V i = 7 m/s V f = 12 m/s a = v f – v i Δ t Δ t t = 2.0 s = (12.0 m/s – 7.0 m/s) = 2.0 s 2.0 s 2.5 m/s²

Changing Acceleration Velocity (v) Time ( Δ t) Forward Motion Reverse Motion Zero Motion

1-Dimentional Motion Equations V avg =Δx/Δt Δx = ½ (v i + v f ) Δt a = (v f - v i ) / Δt Δx = v i Δt + ½ aΔt² v f ² = v i ² + 2aΔx