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Motion BOOT CAMP

Motion BOOT CAMP Catalyst (A science term, a substance that starts a reaction. We start our class with a catalyst!) New way of doing a catalyst and getting class started: --Will be CHECKED at the end of class. You need to have it completed BEFORE you can leave.

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Motion BOOT CAMP

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  1. Motion BOOT CAMP • Catalyst (A science term, a substance that starts a reaction. We start our class with a catalyst!) • New way of doing a catalyst and getting class started: • --Will be CHECKED at the end of class. You need to have it completed BEFORE you can leave. • --In order to leave class, you need a stamp from me. • --I will only stamp your notebook if I see you doing your catalyst in the first 5 minutes of class only (right after the bell rings, the time begins). • Solve the following problems: • 1. Find the average speed of a car that travels 30 kilometers in 15 minutes. Write the formula you use, show all of your work, and use the proper units. • 2. What is the acceleration of a soccer ball that is kicked from rest and takes 5 seconds to reach a velocity of 15 m/s? Write the formula you use, show all of your work, and use the proper units. • 3. An object moves 3 cm to the left and then 5 cm to the right. What is the total distance traveled? What is the displacement? Show all your work and use the proper units! 09/9/11 8L

  2. Motion BOOT CAMP Catalyst 09/9/11 • Speed = d/t d = 30 km; t = 15 min s = 30 km/15 min = 2 km/min • 2. Acceleration = (Vf – Vi)/t Vf = 15 m/s; Vi = 0 m/s; t = 5 s • a = (15 m/s – 0 m/s)/5 s = 15 m/s/5 s = 3 m/s2 • Diagram. Total distance traveled = 3 cm + 5 cm = 8 cm • Displacement = 2 cm (based on diagram) 8L

  3. Motion BOOT CAMP • Announcements • Notebook pop quizzes and checks: Maintain your notebook! Use the absentee notebook or website if you were absent! • Test is now on TUESDAY! • Quiz re-takes = TODAY! • Lab Write-up Homework due TUESDAY! • Norms on HW questions • “I don’t get it” isn’t a question • ASK questions, start somewhere • Think critically! Break it down! 09/9/11 8R

  4. ALSO, My number is 203-560-8146 and it is correct on the website. Please make sure you are dialing the right number and ALWAYS leave a message or else I can’t call you back! If you send me an email, I may not get to it until later…be sure to check before you go to bed and when you wake up. I WILL respond to your email, it just may not be immediately!

  5. NEW TABLE SET-UP!! Take note of your table number and seat letter! We will be using these set-ups for Think-Write-Pair-Shares and other partner/group activities!

  6. NEW POLICIES!! Index cards: I will put a tally mark on the back if I call on you and you are off task or unfocused. A daily report will be emailed to Mr. Gomez Pencils: You must ASK before you exchange! Only during catalyst, no other time during class. See rule #3.

  7. Motion BOOT CAMP • Stopping on a Dime Lab Write-Up(questions from the Word file online) • I will use my lab worksheet and the data table on the back to answer these questions! • Calculate the average speed of the student who ran the 24 ft. course the fastest. • Multiply the speed of the fastest student (calculated in the previous question) by the slowest reaction time listed in your data table. Why would you be interested in this product? • Add the distance calculated in the previous question to the longest stopping distance in your data table. What does this total distance represent? • Explain why it is important to use the fastest speed, the slowest reaction time, and the longest stopping distance in your calculations. • What other factors should you take into account to get results that apply to a real basketball court? • Suppose you calculate that the distance from the out of bounds line to the wall of the basketball court is too short for safety. Write a proposal to the school that describes the problem. In your proposal, suggest a strategy for making the court safer. This proposal should be a separate paragraph in your lab write-up. 09/9/11 8R

  8. What’s our problem?? The school will put in a new basketball court in a small area between 2 buildings. Safety is an important consideration in the design of the court. What is the distance needed between an out-of-bounds line and a wall to that a player can stop before hitting the wall?

  9. Motion BOOT CAMP Stopping on a Dime Lab Write-Up(questions from the Word file online) I will use my lab worksheet and the data table on the back to answer these questions! Paragraph Outline 1st paragraph = What did we do in the lab? How did we calculate stopping distance, running time, and reaction time? What problem are we trying to solve? 2nd paragraph = Question 1. 3rd paragraph = Question 2. 4th paragraph = Question 3. 5th paragraph = Question 4. 6th paragraph = Question 5. 7th paragraph = Question 6. 09/9/11 8R

  10. Motion BOOT CAMP • Stopping on a Dime Lab Write-Up(questions from the Word file online) • I will use my lab worksheet and the data table on the back to answer these questions! • Calculate the average speed of the student who ran the 24 ft. course the fastest. • Multiply the speed of the fastest student (calculated in the previous question) by the slowest reaction time listed in your data table. Why would you be interested in this product? • Add the distance calculated in the previous question to the longest stopping distance in your data table. What does this total distance represent? • Explain why it is important to use the fastest speed, the slowest reaction time, and the longest stopping distance in your calculations. • What other factors should you take into account to get results that apply to a real basketball court? • Suppose you calculate that the distance from the out of bounds line to the wall of the basketball court is too short for safety. Write a proposal to the school that describes the problem. In your proposal, suggest a strategy for making the court safer. This proposal should be a separate paragraph in your lab write-up. 09/9/11 8R

  11. Motion BOOT CAMP • Stopping on a Dime Lab Write-Up(questions from the Word file online) • I will use my lab worksheet and the data table on the back to answer these questions! • Paragraph Outline • Explanation of Questions • What is the equation for average speed? Which numbers did you use? What is your answer with units? • What is the slowest reaction time? What is speed multiplied by time? What does this number tell you? • What is the longest stopping distance? Convert inches to feet. This entire distance is total stopping distance. • We want to make sure that ALL basketball players can stop in the distance we calculate! • Think of a real basketball court…what are some things that would affect how quickly a player can stop? • Write to the people building the basketball court. Explain why it is important to have a big enough stopping distance. Tell them what you think the stopping distance should be (your answer to #3) and why. 09/9/11 8R

  12. Motion BOOT CAMP Stopping on a Dime Lab Write-Up(questions from the Word file online) I will use my lab worksheet and the data table on the back to answer these questions! Paragraph Outline Explanation of Questions Homework --If you feel your lab write-up fully answers all the questions, you may hand it in at the end of class. --If you would like to re-write your lab write-up, you may take tonight to re-write it and hand it in TOMORROW. --Computer lab will be open before school tomorrow (see Mr. Gonzalez). Ms. Cruz for printing ONLY early in the morning before school. --I will NOT accept anything on a flash drive. --I will accept handwritten work that is 2 pages FRONT AND BACK. It will be returned and marked as late if I cannot read it. Re-write lab write-up. Due TUESDAY. 09/9/11 8R

  13. 09/9/11 MOTION BOOT CAMP!!!! Get ready to work.

  14. 09/9/11 MOTION BOOT CAMP!!!! Phase 1--To be done in pairs: 1. When is an object moving? 2. What is the equation for speed? 3. What is velocity? 4. What are the 3 types of acceleration? 5. What does the slope of a distance vs. time graph represent? 6. What is a reference point? 7. What is the equation for acceleration? 8L

  15. 09/9/11 • MOTION BOOT CAMP!!!! • Phase 1--To be done in pairs: • 1. When the distance between it and another object is changing • Speed = distance/time • Speed/magnitude in a given direction • 4. Increasing speed, decreasing speed, and changing direction • 5. Speed • A point used for comparison to tell whether an object is in motion • Acceleration = (Vf – Vi)/t 8L

  16. 09/9/11 MOTION BOOT CAMP!!!! Phase 2--To be done individually: 1. When you know both speed and direction, what do you know? 2. If a bicyclist travels 30 km in 2 hours, what is her average speed? 3. A car travels 100 km the first hour of the trip. The car continues to travel for 2 more hours and travels 200 km. What was the average speed of the car for the trip? 4. Why is the moon accelerating? 8L

  17. 09/9/11 MOTION BOOT CAMP!!!! Phase 2--To be done individually: 1. Velocity 2. S = d/t, d = 30 km; t = 2 hrs, s = 30km/2hrs = 15 km/hr 3. S = d/t, d = 100 km + 200 km = 300 km; t = 1hr + 2hrs = 3hrs, s = 300 km/3hrs = 100km/hr 4. Because it is changing direction 8L

  18. Review and Lesson 3.1 The Nature of Force Catalyst (Remember to get your STAMP!) 1. What is an object doing when either its speed or direction is changing? 2. Seated passengers are on a boat that is moving down a river. Give examples of 2 reference points – one that tells me the passengers are moving and one that tells me the passengers are not moving. 3. If a train traveling at 30 m/s brakes to a stop in 1 minute, what is the magnitude of its acceleration? Hint: WATCH OUT FOR UNITS!!! 09/9/11 9L

  19. Review and Lesson 3.1 The Nature of Force Catalyst (Remember to get your STAMP!) 5. It is accelerating. 6. Compared to people on shore, the passengers are moving. Compared to the boat, the passengers are NOT moving. f 7. A = (Vf –Vi)/t, Vf = 0 m/s; Vi = 30 m/s; t = 1 min = 60 sec, a = (0 m/s – 30 m/s)/60 s = -30 m/s/60 s = -.5 m/s2 magnitude of acceleration = .5 m/s2 09/9/11 9L

  20. Phase 3--ON A SEPARATE SHEET OF PAPER! • 1. When an object’s distance from another object is changing (write the letter AND the words), • a. it is in motion. • it is moving at constant speed. • it has a high velocity. • d. it is accelerating. • 2. The moon accelerates because it is (write the letter AND the words) • in a vacuum in space. • continuously changing direction. • c. a very large sphere. • d. constantly increasing its speed of orbit. • 3. A car travels 85 km in the first hour of a trip. The car continues to travel for 2 more hours and travels 200 km. What was the average speed of the car for the trip? (Write the letter AND the words) • a. 39 km/h • b. 95 km/h • c. 115 km/h • 285 km/h • Last Name, First Name • Period # • 9/9/11 • Unit 2 Quiz Retake • 4. The statement that the motion of a hurricane is 20 kilometers per hour in an easterly direction is a description of the hurricane’s ____________________. (Just write the word to fill in the blank for your answer) • 5. A roller coaster is moving at 10 m/s at the top of a hill and 22 m/s at the bottom of the hill two seconds later. Find the acceleration. You must show all of your work, the formula you used, and use the proper units.

  21. On one side of your index card, please write NEATLY: Your first and last name Your email address Your parent’s first and last name Their phone number Their email, if they have one When you are done, have 1 person at your table collect all the cards and bring them to me.

  22. Review and Lesson 3.1 The Nature of Force Class Reading p. 354 Graphing Motion 09/8/11 9R

  23. 09/8/11 Review and Lesson 3.1 The Nature of Force Demo! Then… CATALYST What caused a change in the skateboard’s velocity? The change in velocity is caused by… …a push or a pull, which is also known as a force! 9L

  24. 09/8/11 Review and Lesson 3.1 The Nature of Force NEW Unit 3: Introduction to Forces! Vocabulary: Force, Newton, net force A force is described by its magnitude and by the direction in which it acts. Force is measured in Newtons. Example = It takes about 1 N of force to lift a small apple. Net force = combination of all forces acting on an object 9R

  25. 09/8/11 Review and Lesson 3.1 The Nature of Force Think-Write-Pair-Share 1. What is an example of a “push” force? What is an example of a “pull” force? A push force would be kicking a soccer ball. A pull force would be tug of war. 2. If there are multiple forces acting on an object, why is the direction AND magnitude important? Hint: Think of net forces! You need to know the direction and magnitude of all the forces to combine them and determine which ones cancel out and which ones add together. This is the net force! 9L

  26. 09/8/11 Review and Lesson 3.1 The Nature of Force Force Diagrams and Calculating Net Force Examples: Same magnitude and direction Unequal magnitude, opposite direction Equal magnitude, opposite direction 9R

  27. 09/8/11 Review and Lesson 3.1 The Nature of Force Exit Slip Draw your own force diagram and calculate the net force. 9L

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