Speed&Velocity

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UNIT 2: MOTION

PART I: LINEAR MOTION

1.Collect Lottery Tickets for Homework Grade!

100: 4 Tickets; 90: 2 Tickets; 75: 1 Ticket 2. Label your notebook! SEE WARMUP

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Setting the Stage

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Setting the Stage

• Part I: Linear Motion

• 1.5 Week Chapter

• Three Days of Content

• Assessments

 _{Mastery Quiz (every week)}

 _{Two Unit Tests (every 3 weeks)}

 _{Linear Motion Project:}_{In our first ever Chapter Challenge}

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A Look at The Olympics

Through the Lens of

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Problem of the Day:

In the wake of the 2014 Sochi Winter Olympics, you have

been hired by the 2016 Rio Brazil Olympic Committee to analyze the effectiveness of players across all sports. How can you apply your physics

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Motion!

Everything around us moves.

Even things around us that don’t seem to move ARE actually moving

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LINEAR MOTION

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SPEED

1. Speed is a measure of how fast something in moving

2. It is the rate at which distance is covered

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Calculating speed

•Speed depends on two things

▫_{Distance (how far an object traveled)} ▫_{Time (how long it took to travel)}

•If you want to calculate speed, how do you put distance and time together

mathematically?

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INSTANTANEOUS SPEED VS. AVERAGE SPEED

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But what about...

VELOCITY

VELOCITY IS SPEED IN A GIVEN DIRECTION

for example, SPEED: Swimmer swam 5 m/s

VELOCITY: Swimmer swam 5 m/s to the north

Constant Velocity: CONSTANT SPEED & CONSTANT DIRECTION (constant speed in a straight line)

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Speed and velocity can often be the same. But the two are NOT used interchangeably in physics

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•The formula for speed and velocity looks like:

▫v = velocity

 _{measured in m/s or km/hr}

▫∆x = change in displacement/distance

 _{measured in meters, kilometers, centimeters, etc.}

▫∆t = change in time

 _{measured in seconds, minutes, hours, etc.}

A change in any quantity, indicated by the Greek

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Let’s try this!

•We will be solving word problems from

here on out, and I would like us to follow these five simple steps:

Draw a picture

List the Given Information

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I DO

In the Sestriera section (top) of the course in the Sochi Winter Olympics, the majority of the downhill skiers covered a distance of 76 meters in 2 seconds.What is the speed of these skiers in m/s?

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We Do: Markerboard

•Usain Bolt broke the world record by

running the 100m dash in 9.58 seconds towards the north in Moscow. What is his average velocity?

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• Using the same velocity equation we can also solve for time or distance.

▫ We can solve for whichever variable is

missing as long as the other two are given ▫ It’s all about making the equations do what

we want 

• _{And let me show you what I mean…}

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I DO

•In the Men’s US Hockey matches in the

Sochi Olympics, the athletes have known to hit slapshots where the puck travels 45 m/s (100 mph!!!) for 1 second. What

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YOU DO: Markerboard

•The USA Bobsled Team averages a speed

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I DO

•In the speed skating event, the top skater will reach speeds of 14 m/s (31 mph!)

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YOU DO:

Student Olympic Event • Dominoes Relay Race

▫ Work with your group to solve a series of

speed/velocity questions! ▫ You HAVE TO USE THE 5

STEP METHOD

• In partners, connect the domino pieces together

▫ There is an extra answer that doesn’t fit

▫ There is an extra question that doesn’t go anywhere

Answer

Question Answer

What is Mr. A’s favorite subject?

Physics

What’s the real name of Hannah

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MAKE UP MISSED QUIZ & TURN IN

HOMEWORK:

Victor, Kadine, Nicholas, Marquon, Mya

HOMEWORK DETENTION:

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EXIT TICKET:

Let’s me know how well you understand the material!

Complete individually and silently!

On a blank white notecard in your table bin!

PERIOD 1+3: The Curling team slides the HUGE “Curling” Puck at 4 m/s for 4 seconds. How far does the puck travel in meters?

Period 4: The Curling team slides the HUGE