Speed & Velocity.

Slides:

Advertisements

Similar presentations

Aim: How can we distinguish between speed, velocity and acceleration?

Advertisements

Kinematics – Defining Motion

KINEMATICS Speed and Velocity.

Speed and Acceleration

C H A P T E R 2 Kinematics in One Dimension. Mechanics The study of Physics begins with mechanics.

SPEED AND VELOCITY NOTES

Displacement and Velocity Chapter 2 Section 1. Displacement Definitions Displacement – The change in position of an object from one point to another in.

Reference Point Scalar Vector Position Distance Displacement Speed

What is motion? Motion is the change in the position of an object. To describe the motion of an object we use terms like: Distance, displacement, speed,

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.

Mr. Dunnum Physical Science

The Language of Motion Position – Velocity – Acceleration.

How Far? _________ (d) ______________________________________ To get to the store go 2-miles east, turn right and go 3-miles south. How far will you travel.

Motion in One Dimension Velocity. Motion – A change in position Motion.

Physics 2a = Motion and Forces Speed and Velocity and acceleration Prior learning Definition and equation for speed Key words –Speed, distance, time, velocity,

Do Now: Distinguish between distance and displacement. Which directions are positive? Which directions are negative?

Is she moving clockwise or

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

Physical Science Motion Unit. Frame of Reference All motion is relative to some point of view. – A car is stopped at a light and the driver takes his.

SPEED AND ACCELERATION. MOTION  Motion occurs when an object changes position relative to a reference point  You do not need to see an object in motion.

Speed and Velocity.

The Language of Motion Position – Velocity – Acceleration.

Kinematics – the study of the motion of objects without consideration to mass or the forces acting upon objects.

Motion, Speed, & Velocity. Motion Motion is a change in position (relative to a reference point) *reference point- stationary (still) object.

DISTANCE VS DISPLACEMENT SPEED VS VELOCITY. DISTANCE – scalar quantity DISPLACEMENT – vector quantity A car travels 50 km to the East and then 20 km to.

Unit B 1.2 Velocity. Velocity Describes both the rate of motion and the direction of an object You can determine the speed of a car by looking at the.

Motion in One Dimension - velocity. Motion – A change in position Motion.

Motion In One Dimension Physics Honors furai-race-car.html.

Motion, Acceleration and Forces. DISTANCE AND DISPLALCEMENT Section 1.

Representing Motion Kinematics

Starter (2 minutes): A cyclist who has been travelling at a steady speed of 4.0 ms-1 starts to accelerate. If he accelerates at 3.0 ms-2, how long will.

Displacement, speed, velocity, acceleration and momentum

Unit II Physical Science

Conceptual Physics by Hewitt C H A P T E R 2- Linear Motion

Chapter 12 What is motion?.

How fast we move and in what direction are we going.

Methods of Motion Physics I.

Do Now Read and annotate the reading passage. Answer the questions on the back.

Motion In One Dimension

Motion Chapter 11.

Uniform Motion.

Notes 1: Measuring Motion

Calculating Velocity Honors Physics.

Chapter 2 - Motion.

Speed How fast does it go?.

Directionally challenged Steve has a hard time with velocity!!

What is the speed of a biker who travels 30 m

What is the distance of the picture shown at the left?

Speed & Velocity.

Velocity and speed.

Chapter 2 Acceleration.

Speed and Velocity 2017.

Displacement, speed, velocity, acceleration and momentum

Distance vs. Displacement

3.1 Notes, Part B.

Average Velocity.

Distance, Displacement, Speed, and Velocity

SCI 10 Physics Speed and Velocity.

What is the difference between instantaneous speed and average speed?

Inv 3.1 Position, Speed, and Velocity

Motion Investigate the relationships among speed, position, time, velocity, and acceleration.

Warm up day 8/30/15 In your composition book

Linear Motion Chapter 2.1 & 2.2.

Linear Motion Chapter 2.1.

Speed and Velocity 11.2.

Unit 1: Intro to Physics Speed & Velocity.

That is constant motion to you and me.

Motion How fast is fast?.

Introduction to One-Dimensional Motion

Presentation transcript:

Speed & Velocity

Velocity (v): How fast an object is displaced. Speed Vs. Velocity Speed: How fast an object travels. Velocity (v): How fast an object is displaced.

Concept Check Click for Answer REALLY?

Velocity is determined by displacement Speed Vs. Velocity They seem to be the same thing… right? How are speed and velocity different? Speed is determined by distance Scalar Velocity is determined by displacement Vector

the ratio of the total distance traveled to the Average Speed is: the ratio of the total distance traveled to the time taken to travel that distance d s = t s = average speed SI Units: m/s d = total distance traveled SI Units: m Δt = change in time SI Units: s

the ratio of change in position to the Average velocity is: the ratio of change in position to the time taken to change the position x v = t Δx = change in position (displacement) SI Units: m Δt = change in time SI Units: s v = average velocity SI Units: m/s

The “sign” of the velocity indicates the direction of movement. A positive sign indicates movement in the positive direction. A negative sign indicates movement in the negative direction.

Units are Important! What does meters mean? What does mph mean?

Average Vs. Instantaneous Think about it… It took me 30 minutes to get the beach this summer. Was I going the same velocity the whole time? How did my velocity at a stop light compare to my velocity on the highway? What’s the difference?

Practice: Easy BYU’s running back, Jamaal Williams, runs the 40 yard dash in 4.46 s. What is his average speed in yd/s? A speedometer shows his speed as he crosses the finish line to be 25.6 mph (12.47 yd/s). Do you still believe your answer is correct? Why or why not?

Concept Check Click for Answer

Practice: Difficult Mr. Black runs west at 8 mph for 15 minutes, turns north and runs 7.5 mph for 20 minutes, stops to tie his shoes (which takes 5 minutes because he never learned in Kindergarten), and finally runs east for 5 minutes at 10 mph. What is his average speed and average velocity?

Solution Remember, average speed is TOTAL DISTANCE divided by TOTAL TIME. First you must calculate the distance for each part of the trip. Use total distance and total time to find average speed. Average velocity is DISPLACEMENT divided by TOTAL TIME. First calculate Δx and Δy. Calculate total displacement. Calculate average velocity.