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AP PHYSICS UNIT 1 Kinematics

PHYSICS LAB. http:// dev.physicslab.org/Default.aspx. HYPER PHYSICS. http:// hyperphysics.phy-astr.gsu.edu/hbase/hframe.html. JAVA APPLETS. AP PHYSICS UNIT 1 Kinematics. http ://www.walter-fendt.de/ph14e /. WILEY APPLETS.

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AP PHYSICS UNIT 1 Kinematics

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  1. PHYSICS LAB http://dev.physicslab.org/Default.aspx HYPER PHYSICS http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html JAVA APPLETS AP PHYSICS UNIT 1 Kinematics http://www.walter-fendt.de/ph14e/ WILEY APPLETS http://higheredbcs.wiley.com/legacy/college/halliday/0471320005/simulations6e/index.htm?newwindow=true Section 1 One – Dimensional Motion Displacement Velocity (speed) Average Instantaneous Acceleration Constant Average Instantaneous Free Fall DAVIDSON APPLETS http://webphysics.davidson.edu/physlet_resources/physlet_physics/contents/mechanics/one_d_kinematics/default.html University of New South Wales Lessons – Mechanics Romac AP Physics Unit 1 Section 1 http://www.animations.physics.unsw.edu.au/mechanics/

  2. "In theory, theory and practice are the same. In practice, they are not."... Albert Einstein (1879~1955, Mathematical physicist, Nobel Prize 1921-Physics) http://www.free-test-online.com/ap-physics-c-problems/ap-physics-c-mechanics-questions AP PHYSICS Multiple Choice Problems http://www.education.com/study-help/ap-notes-physics/ Education dot com LEARN AP PHYSICS http://www.learnapphysics.com/apphysicsc/index.html Romac AP Physics Unit 1 Section 1

  3. Labs • Lab AV-E1 Motion on an Incline • Lab V-E2 Back and Forth Motion • Lab V-E3 Cart on a Ramp (F-150) • Lab V-E4 Determining “g” on an incline (ramp and F – 150) • Read and be able to TYPE a formal lab write up using the Lab Format provided Romac AP Physics Unit 1 Section 1

  4. UNIT 1 Section 1 Lesson 1 Do Now! What are the units for Velocity? What is the UNIT for: Energy Work Heat Measuring and Dimensions • Homework • Chapter One • SI Units • Dist = Meters • Time = Seconds • Mass = Kilograms • Density • Dimensional Analysis • Significant figures • Math Review • Page 17-19 • #4, 13, 14, 16, 26, 28, 29, 37 • Page A.18 • Exercises 2 – 6 even • Page A.19 • Exercises 1,2,3 • Page A.20-21 • Exercises 1,2,3 Romac AP Physics Unit 1 Section 1

  5. UNIT 1 Section 1 Lesson 2 Motion Chap 2 Do Now! Men’s USA runner Maurice Greene won the gold in the 100 meter sprint with a time of 9.87 s. What was his average velocity? If his initial velocity was 0, what was his average acceleration? Objectives Homework Pages 50 – 52 #’s 5, 6, 7, 9, 14, 15, 16, 17, 18 • Using Position vs. Time Graphs • Using Data • Calculate: • Average Velocities • Average Accelerations Romac AP Physics Unit 1 Section 1

  6. UNIT 1 Section 1 Lesson 2 B d t 20 m 4 s vs = = A Definition of Speed • Speedis the distance traveled per unit of time (a scalar quantity). d = 20 m vs = 5 m/s Not direction dependent! Time t = 4 s Romac AP Physics Unit 1 Section 1

  7. UNIT 1 Section 1 Lesson 2 s = 20 m B Δx=12 m A 20o Time t = 4 s Definition of Velocity • Velocityis the displacement per unit of time. (A vector quantity.) = 3 m/s at 200 N of E Direction required! Romac AP Physics Unit 1 Section 1

  8. UNIT 1 Section 1 Lesson 2 In Class PRACTICE / DEMO Cart Rolling down Ramp Measure Displacement Measure Time Calculate Average Velocity Find the Equations (5) of one- dimensional motion . Illustration 2.3: Average and Instantaneous Velocity. Illustration 2.4: Acceleration and Measurement. Illustration 2.5: Motion on a Hill or Ramp. Lab AV-E1 Motion on an Incline Romac AP Physics Unit 1 Section 1

  9. UNIT 1 Section 1 Lesson 3 The BIG 5 Do Now! Navy jets launch from aircraft carriers using catapults go from 0 to launch speed in 175 feet (5.334X 101 m) in 2.15 sec. What is the average velocity as it travels down the catapult? How far has it traveled at 1.10 seconds? Objectives Homework Summary Sheet chap 2 terms, Solving for -Average Velocity -Acceleration -Final Velocity Problem Set • Utilize THE BIG FIVE EQUATIONS!!! • Each student should be able to solve for : • Vf when Vi, ,a and t are known • Vi when,Vf ,a and d are known • d when Vf , Vi and t are known • d when a , Vi and t are known • a when d , Vi, Vfand t are known Romac AP Physics Unit 1 Section 1

  10. UNIT 1 Section 1 Lesson 3 Vf2 = V02 + 2aΔd Example: A train accelerates from 10 m/s to 40 m/s at an acceleration of 1m/s 2. what distance does it cover during this time. Using V2 = V02 + 2aΔs, we sub in values 40 for V, 10 for V0 and 1 for a. Re-arranging to solve for s, we get: ΔS = 750 m With Significant Digits ΔS = 800 m Romac AP Physics Unit 1 Section 1

  11. UNIT 1 Section 1 Lesson 3 d = V0Δt + 0.5 a Δt2 Example: A body starts from rest at a uniform acceleration of 3 m/s2. how long does it take to cover a distance of 100m. Using d = V0Δt + 0.5 a Δt2, we sub in values 3 for a, 0 for V0 and 100 for s. Re-arranging the equation and solving for t (using the quadratic formula), we get: t = 8.16 or -8.16 seconds. As time cannot be negative, t = 8.16 seconds. t = 8 seconds Romac AP Physics Unit 1 Section 1

  12. UNIT 1 Section 1 Lesson 3 d = Vavg * t = (V0 + Vf)/2 × t Example: A car decelerates from 20.0 m/s to 10.0 m/s over a period of 10.0 seconds. How far does it travel during this time period. Using d = (V0 + Vf)/2 × t, we sub in values 20.0 for V0, 10.0 for Vf and 10.0 for t. Solving for s, we get: d = 150m Romac AP Physics Unit 1 Section 1

  13. UNIT 1 Section 1 Lesson 3 A Sep 10 /11 Note: • All units must be converted such that they are uniform for different variable throughout the calculations. • Time  seconds • Distance  meters • Velocity  m/s • Acceleration  m/s2 • Kinematic quantities (except time) are VECTORS and can be negative. http://webphysics.davidson.edu/physlet_resources/physlet_physics/contents/mechanics/one_d_kinematics/default.html Romac AP Physics Unit 1 Section 1

  14. UNIT 1 Section 1 Lesson 3 Sep 10/11 Position vs. time graph (velocity) x, (m) Romac AP Physics Unit 1 Section 1

  15. UNIT 1 Section 1 Lesson 3 Sep 10/11 velocity vs. time graph (acceleration) v, (m/s) Romac AP Physics Unit 1 Section 1

  16. UNIT 1 Section 1 Lesson 3 slope x2 Dx Dx Displacement, x x1 Dt Dt t1 t2 Time Graphical Analysis Average Velocity: Instantaneous Velocity: Romac AP Physics Unit 1 Section 1

  17. UNIT 1 Section 1 Lesson 3 Sep 10/11 In Class PRACTICE / DEMO Motion with Constant Acceleration http://www.walter-fendt.de/ph14e/acceleration.htm HOMEWORK • Summary Sheet chap 2 terms, • Review Lab Format and truck Lab for next class • Solving for -Average Velocity -Acceleration -Final Velocity • Page 52 – 54 • 21, 25, 26, 31,33, 37, 41, 44, 66 Romac AP Physics Unit 1 Section 1

  18. UNIT 1 Lesson 4 Sep 11 -13??? Velocity LAB Labpro - Cart Objectives Homework Complete LAB 1 BRING LAPTOPwith “EXCEL” for next class http://dev.physicslab.org/Document.aspx?doctype=2&filename=Kinematics_LabProAcceleratedMotion.xml • Measuring times of roll • Calculate • THE ACCELERATION • THE VELOCITIES • OF AN F-150 ROLLING DOWN THE ACADEMIC WING HILL. Romac AP Physics Unit 1 Section 1

  19. UNIT 1 LESSON 5 Fri Sep 14 Lab Review - Excel Do Now By Team swap labs Check Data and Calculations Read Results and Conclusion sections Evaluate Effort using EEMO Objectives Homework On Excel create a graph that shows a Lacrosse ball falling at a constant acceleration of 9.8 m/s2 for 30 seconds. • Utilizing Excel • Plot Data and obtain Graphs of: • Position vs. Time • Velocity vs. time • Acceleration vs. time Romac AP Physics Unit 1 Section 1

  20. UNIT 1 Section 1 Lesson 6 TUES Sep 18 Aaaaaaaah!Free Fall Do Now! TEST ends at 11:25 am A lacrosse ball is dropped and falls from the BIW Crane. If the Cranes is 350.0 ft tall (107.7 meters). How long will it take the ball to hit the ground? What will the velocity be? Objectives Homework Page 53 #’s 41, 43, 47, 48, 49, 52 • Be able to utilize the BIG 5 Equations to calculate: • Velocity • Displacement of a falling {NO Friction} object on Earth . Illustration 2.6: Free Fall. Romac AP Physics Unit 1 Section 1

  21. UP = + UNIT 1 Section 1 Lesson 6 a = - v = 0 y = + Sign Convention:A Ball Thrown Vertically Upward a = - v = + y = + y = + a = - • Displacement is positive (+) or negative (-) based on LOCATION. v = - v = - y = 0 y = 0 a = - Release Point • Velocity is positive (+) or negative (-) based on direction of motion. y = -Negative v= -Negative a = - • Acceleration is (+) or (-) based on direction of force (weight). Romac AP Physics Unit 1 Section 1

  22. UNIT 1 Section 1 Lesson 6 In Class PRACTICE / DEMO Free Fall http://higheredbcs.wiley.com/legacy/college/halliday/0471320005/simulations6e/index.htm?newwindow=true Free Fall- 2 http://www.walter-fendt.de/ph14e/acceleration.htm • Pages 41- 42 Examples • 2.10 – 2.11 – 2.12 Romac AP Physics Unit 1 Section 1

  23. Data Tables and Graphs UNIT 1 Section 1 Lesson 7 Objectives Homework Pg: 54 #52 Find the inst Velocity at t= 2.0 sec Find the inst acceleration at t = 2.0 sec #53, #54 Do Now! What is the average acceleration of the A-6 Intruder as it travels down the catapult from 0 to 150 Knots (7.62 X 101 m/s) in 2.15 seconds? • Calculate: Instantaneous Velocities from data tables (and graphs) Illustration 2.3: Average and Instantaneous Velocity. • Calculate: Instantaneous Accelerations from data tables (and graphs) • Calculus: Derivative http://www.animations.physics.unsw.edu.au/jw/calculus.htm#Power Problem 2.1: Position vs. time graph for the T-bird. Problem 2.4: Two balls are putted with the same initial velocity on separate greens. Problem 2.5: Sketch velocity vs. time graph. Problem 2.7: Calculate the acceleration of 6 carts depending on the data given. Problem 2.8: The purple truck is catching up to the yellow truck. Romac AP Physics Unit 1 Section 1

  24. UNIT 1 Lesson 8 • Lab V-E4 • Determining “g” on an incline (ramp and F – 150) Constant Acceleration Motion Homework: What is the gravitational Acceleration in Bath, ME? Formal LAB Write-up DO NOW: What is the gravitational Acceleration in Bath, ME? Would it be larger or smaller on Mount Everest? Why? Romac AP Physics Unit 1 Section 1

  25. UNIT 1 Lesson 9 • You must know how to do these actions: • Calculate Average Velocities from data • Calculate Average Accelerations from data • Calculate times and distances given Average Velocities & Accelerations • Calculate Average Velocities & Accelerations given times and distances • Calculate and / or measure Average Velocities from data tables (and graphs) • Calculate and / or measure Average Accelerations from data tables (and graphs) • Calculate Acceleration due to gravity of an object in free fall • Calculate an objects velocity in free fall Romac AP Physics Unit 1 Section 1

  26. AP PHYSICS IUNIT 1 Section 1 MOTION Homework: Chapter 3 Vectors Give and example when it they happened to YOU! Do NOW: TEST Romac AP Physics Unit 1 Section 1

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