Distance, Displacement Speed, and Velocity Frame of Reference - In order to measure the distance of an object we must use a frame of reference. Point.

Slides:



Advertisements
Similar presentations
Motion, Speed, and Velocity
Advertisements

Please take out paper for notes!!
Glencoe: Chapter 3 Section 1 Pages 70-75
Speed vs. Velocity.
Motion and Energy Chapter 9 Section 1 and 2 By Mrs Nazarali.
Chapter 11 – Part 1 Non-accelerated Motion Chapter
Speed, velocity and acceleration. Motion When an object changes its position, motion has occurred. –Distance- How far an object has moved. –Displacement-
SPEED AND VELOCITY NOTES
Motion ku3b4F5eauE.
Physics Ch. 3 Position, Speed, and Velocity
Linear Motion. You can describe the motion of an object by its position, speed, direction, and acceleration.
Motion, Speed, and Velocity
Chapter 11 - Motion.
Bell ringer For each of the devices above:
Section 1: Measuring Motion
Average Speed Mrs. Martinez Sixth Grade. Welcoming Work Review What is Force? What is Force? What is a balanced force? Describe by using arrows to draw.
Motion, Speed, and Velocity THE NEED FOR SPEED!!! dKDDrnx-Fgw.
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…
Speed and Velocity Distance vs. Displacement You drive the path, and your odometer goes up by 8 miles (your distance). Your displacement is the shorter.
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, Speed, and Velocity
Chapter 2 Displacement and Velocity Frame of Reference - In order to measure the distance of an object we must use a frame of reference. Point A >
Velocity and Speed. Mechanics Branch of physics that studies motion Two parts Kinematics – describes motion Dynamics – tells why motion occurs.
Motion – Part 1 Frame of Reference Distance vs. Displacement Average Speed.
Physics Unit 2 1-D and 2-D Motion Topics: 4 What is Linear Motion? 4 Vector vs. Scalar Quantities 4 Distance vs. Displacement (Comparison) 4 Speed vs.
Section 1Motion Bellringer, continued 1. For each of the devices above, indicate whether it measures distance, time, or speed. 2. For each of the devices.
Kawameeh 8 th Grade Science.  Reference Point - The starting point you chose to describe the location, or position of an object. Position - An object’s.
Section 1Motion Bellringer, continued 1. For each of the devices above, indicate whether it measures distance, time, or speed. 2. For each of the devices.
Introduction to One- Dimensional Motion. Quantities associated with motion Scalar Quantities do not have direction. Scalar quantities only have magnitude.
MEASURING MOTION Chapter 11 Section 1. STANDARDS Standard 3 Motion: 1. Investigate the relationships among speed, position, time, velocity, and acceleration.
 You will be able to explain the relationship between motion and a frame of reference  You will be able to relate speed to distance and time  You will.
Section 1Motion Section 1: Measuring Motion Preview Key Ideas Bellringer Observing Motion Speed and Velocity Calculating Speed Math Skills Graphing Motion.
Chapter 2: Linear Motion Kinematics. Kinematics Kinematics is the science of describing the motion of objects using words, diagrams, numbers, graphs,
Motion, Speed, & Velocity. Motion Motion is a change in position (relative to a reference point) *reference point- stationary (still) object.
Distance and Velocity Chapter 11.1 Notes. Objects in Motion Motion is all around us—from a car driving in a straight line to a satellite circling the.
Chapter 4 Linear Motion. Position, Distance, and Displacement Position: being able to describe an object’s location is important when things start to.
Chapter 2 Describing Motion.
MOTION Chapter 10.
Do Now Read and annotate the reading passage. Answer the questions on the back.
11.1 Distance and Displacement
Describing Motion.
Motion Chapter 11.
Motion, Speed, and Velocity
Speed & Velocity.
Lesson 2.1 Displacement and Velocity
Motion, Speed, and Velocity
Speed, Distance, Displacement and Velocity
An object is resting motionless on a surface
Chapter 2: Motion Section 1: Describing Motion
Motion, Speed, and Velocity
Motion.
Position, Speed, and Velocity Ch. 4 Physical Science
Homeroom Warm Up Think about all the different things you can do on a computer. What is your favorite thing to do on the computer?
Section 1: Measuring Motion
Motion, Speed, and Velocity
Homeroom Warm Up Think about all the different things you can do on a computer. What is your favorite thing to do on the computer?
Physical Science - Physics
PHYSICS ESSENTIALS UNIT 2: MOTION.
Chapter 11 Motion.
Unit B01 – Motion in One Dimension
Constant Motion HS-PS1 Level 1.
Motion and Speed.
Motion, Speed, and Velocity
Section 1: Measuring Motion
Motion, Speed, & Velocity
Speed, Velocity and Acceleration
Chapter 4 Linear Motion.
Section 1: Measuring Motion
Motion, Speed, and Velocity
Motion, Speed, and Velocity
Presentation transcript:

Distance, Displacement Speed, and Velocity

Frame of Reference - In order to measure the distance of an object we must use a frame of reference. Point A > Point B - These are usually distinct points on the Earth's surface or distinguishing points in the sky.

The perception of motion depends on the observer’s frame of reference Describe the motion observed by one of the boys in the drawing, how does the motion appear to be different to the other boy?

The perception of motion depends on the observer’s frame of reference Imagine you are the girl observing the bus, describe the motion of each object that you can see

Distance is a scalar quantity and tells you only the magnitude (number sum only) of a path taken. scalar quantity = An amount or measurement that is not related to direction. Speed, volume, and temperature are scalar quantities.

Displacement is the shortest distance between the starting point and the end point.

Distance vs. Displacement You drive the path, and your odometer goes up by 8 miles (your distance). Your displacement is the shorter directed distance from start to stop (yellow arrow). What if you drove in a circle? start stop

From Home travel: 13 blocks East 6 blocks North 16 blocks West 6 blocks South What is your total distance? What is your total displacement?

Example 1: Example 1: An object moves from A (start) to D (end) along the red path as shown below. (Each square is 1 km) a) Find the total distance covered by the object b) Find the displacement of the object Total distance is 9 km Total displacement is 5 km

Example 2 An object moves, along a line, from point A to B to C and then back to B again as shown in the figure below. a) Find the distance covered by the moving object. b) Find the magnitude of the displacement of the object. Total distance is 13 km Total displacement is 5 km

Constant speed A moving object that doesn’t change it’s speed travels at constant speed A moving object that doesn’t change it’s speed travels at constant speed Constant speed means equal distances are covered in an equal amount of time Constant speed means equal distances are covered in an equal amount of time

Calculating Speed Speed = Distance Time If a runner travels 100 m in 10 seconds what was his average speed? Probably not constant Can solve for the other pieces too Distance = speed x time Time = Distance Speed

Calculating Speed Speed = Distance Time Can solve for the other pieces too Distance = speed x time T x S = D x T so D=T x S T 1 Time = Distance Speed Tips: 1. to move something to the other side, just do the opposite math operation to it. 2. If you do it to one side, do it to the other.

Motion When an object changes its position, motion has occurred. –Distance- How far an object has moved. –Displacement- How far an object has moved in relation to its starting point. –Consider direction Example: Two runners travel along the same straight path in a straight line for 500 meters. At the end of the run their distances are the same but their displacements are different. How can this be so?

Speed- Distance an object travels per unit of time Relationships between speed, distance, and time: Speed = Distance/ Time = d/ t »Constant Speed- speed does not change over time »Average Speed- speed of motion when speed is changing Avg Speed = Total Distance/ Total Time »Instantaneous Speed- speed at any given moment in time (speedometer)

Graphing Motion Graph distance on the y- axis and time on the x-axis Slope = rise = distance = speed run time run time

Distance - Time Graph If something is not moving, a horizontal line is drawn. If something starts out slow and then speeds up, its change in speed can look like this.

Learning Checkpoint This graph shows several stages of motion: Stage 1: 100 m in 10 s Stage 2: 50 m in 10 sStage 2: 50 m in 10 s Stage 3: 150 m in 20 s Calculate the speed as indicated by each of the colors. Calculate the average speed. What is the total distance? What is the displacement?

Solution Stage 1: S= d/ t 100 m/ 10 s= 10 m/s Stage 2: S= d/t 50 m/ 10 s= 5 m/s Stage 3: S= d/t 150 m/ 20 s= 7.5 m/s Ave Speed= Tot d/ Tot t 300 m/ 40 s= 7.5 m/s Distance = 300 meters Displacement = 0 meters

More Speed Practice

instantaneous velocity - the velocity that something has at any one instance –(The terms instantaneous speed and avg. speed may also be used)

Velocity The speed and direction of an object’s motion. –88 km / hr southwest

The average velocity for a trip might be 53 miles/hour. However, during this trip your instantaneous speed might have been 0 miles/hour at a stoplight or 70 miles/hour on the open road.

Video & Summarizer Highlight important facts on your Cornell notes paper. Study Guide They might be giants – speed and velocity video Group Work:Group Work: 1.Bubble Gum Physics Lab 2.Distance, Time, Speed practice problem worksheet.