1) The document provides instructions and information for students on various physics concepts like speed, distance, displacement, and motion. It includes examples of calculating speed and directions for assignments. 2) Students are asked to conduct experiments measuring their running speed over 10 meters and the distance and displacement of walking to the classroom door and back. 3) Other topics covered include defining key terms like speed, velocity, acceleration, and using graphs to illustrate motion. Real-world examples comparing the speeds of different objects are also discussed.

1. Warm-Up, 09.02.2009 What is the fastest speed you have ever travelled? Name 3 experiments where it would be important to measure the speed of an object in order to save human lives.

2. Announcements Test scores will be posted by Monday at the latest. If you think you did poorly on the test, I will post an extra credit assignment this week that will be worth up to three (3) grades. Hope you got your running shoes!

5. Launch Lab: Running Speed Step 1) Form into groups of two. Step 2) One person gets a meter stick. Step 3) Make sure somebody in your group/area has a stop watch, a sheet of paper, and a pen in addition to your meter stick. Step 4) Mark off a 10m line on the ground with a starting and ending point. Do not draw the entire line, just place the starting and ending points. Step 5) Have your partner use their stopwatch to determine how fast you run the ten meters. Step 6) Write down your run time. Step 7) Divide 10m by your run time in seconds to calculate your speed in m/s Step 8) Multiply your answer by 3.6 to determine your speed in km/h. Step 9) Compare your speed against the things listed on the next slide. Write a paragraph comparing and contrasting the various means of movement these different things employ, and why or why not this contributes to you doing better or worse than them. Step 10) Place your results in the Labs/Projects section of your binder.

6. Animal/Object Speed (km/h) Hair Growth……………………………………………….……….1.7 × 10^8 Snail……………………………………………………………………..0.048 Three-Toed Sloth………………………………………………………..0.15 Snake…………………………………………………………………………3 Chicken……………………………………………………………………..14 House Cat…………………………………………………………………..30 Puppy………………………………………………………………………..40 World Champion 100 meter sprint……………………………………42.48 Car (Average Speed)………………………………………………….40-60 Horse………………………………………………………………………..64 Cheetah……………………………………………………………………120 Peregrine Falcon…………………………………………………………321 SSC Ultimate Aero TT (world’s fastest production car)………………417 Wind speed of a tornado………………………………………………..468 The rotation of the earth…………………………………………….1,180.7 The speed of sound……………………………………………………1,236 Space Shuttle…………………………………………………………..2,816 SR-31 Blackbird (Jet)………………………………………………..10,855 Speed of the Milky Way Galaxy………………………………….1,990,000 The speed of light (in a vacuum)…………………………..1,079,252,848.8

7. To recap: Distance: length of traveled path. D=RxT (DIRT) Displacement: distance + direction from starting point. Vector: size + direction Speed: total distance / total time Velocity: speed + direction

8. What is motion? Motion is a change in position Ex. Going from one location to another. What is Displacement? DIPLACEMENT is the distance and direction of an objects final position from its original position. This is a VECTOR QUANTITY (this means it has a direction and a size). Vector = Direction and Size. This just means “How far did you get from your original place and how fast did you get there?”

9. Distance: The length of the path that an object travels. distance of run = ~200 meters

10. Distance: 1) Pair up. 2) Get a meter stick. 3) Mark an x on your paper and leave your paper on the desk. This is your starting point. 4) Walk to the door and back. Record the distance traveled on the same sheet of paper as your speed lab.

11. What is Displacement? DISPLACEMENT is the distance and direction of an objects final position from its original position. This is a VECTOR QUANTITY (this means it has a direction and a size). Vector = Direction and Size. This just means “How far did you get from your original place and how fast did you get there?”

13. What direction did the ducks move? About how far did they move? What was their displacement?

14. What is a runners displacement on a track if he goes around one full time?

15. Displacement: The distance and direction of an object from its starting point displacement of run = ~10 meters South N

16. Displacement 1) Pair up. 2) Get a meter stick. 3) Mark an x on your paper and leave your paper on the desk. 4) Walk to the door and back. Sit in your partners chair. Record your displacement on the same sheet of paper as your speed lab.

18. Average Speed = (total distance/total time) Lets do a practice problem: A basketball player chases after a ball and runs 10 meters in 6 seconds. What is his average speed?

19. To Solve those dirty little Speed problems…..remember this: DIRT Distance equals Rate times D=R x T Time. Ex: How far will a motorcycle travel going 60 miles per hour for 30 minutes? Ex: I leave my house at 6:20am to get to school which is 35 miles away from my house. How fast do I drive if I get to school by 7:00 am? Ex: How long will it take for me to cover 30 miles if I am driving 20 miles per hour?

20. Velocity – This is the VECTOR of SPEED. Meaning it is the speed, but WITH A DIRECTION!!!!! Velocity: Speed & Direction of an object EX: This Cheetah is SUPER HUNGRY, which is bad news for the gazelle! If the Cheetah is chasing his next meal east at a speed of 15 meters/second. What is its VELOCITY? (Hint: This will be obvious and very easy once you see the answer)

21. Distance (meters) GRAPHING MOTION! Plotted on a distance – time graph This means that TIME is plotted along the X-Axis and Distance is plotted along the Y-Axis Acceleration is the slope of the line. I will explain this more after the example. Time (seconds) Example: Julia, Jessica, and Jennifer competed in a cross country meet. Their times were recorded as follows: Time Meters Jennifer Jessica Julia 10 800 600 400 20 1600 1200 400 30 2400 1800 1000

23. Project #1: Rube Goldberg Machine

24. Office Supplies

25. Billiards & Dominos

26. Household Items

27. Household Items – Apple Juice Pour

28. Wrap-Up What do you want to be when you “grow up?” Does the amount of money you will make factor into what you want to be? Is money the key to happiness? If not, what is? Do you think it’s true that “anybody can be anything they want to be?” What did we learn today? What is due next class?