Monday 5/5/14 • Do Now: • Chapter 11 Vocabulary • Today: • Exploring Distance vs. Displacement • Distance vs. Displacement Questions • Video Field Trip – Chapter 11 • Homework: • Chapter 11.1 GRWS • New Unit • New Notebook • New Table of Contents Unit 3 Chapter 11 Day 1OBJECTIVE: Identify frames of reference and describe motion.Distinguish distance vs. displacement. Calculate displacement using vector addition
Tuesday 5/6/14 • Do Now: • Distance and Displacement review • Today: • Homework 11.1 GRWS - check and review • Calculating Average Speed • Speed Machines • Average Speed worksheet • Homework: • Chapter 11.2 GRWS Unit 3 Chapter 11 Day 2 OBJECTIVE: Interpret Distance Time Graphs.Calculate average speed.
Wednesday 5/7/14 • Do Now: • The Amazing Albert Maze • Today: • Homework 11.2 GRWS - check and review • Using Science Skills – graphs • Interpreting Distance Time Graphs • The Bus Stop • Speed Challenge Lab • Homework: • Finish Speed Challenge Lab Unit 3 Chapter 11 Day 3 OBJECTIVE: Interpret distance-time graphs. Investigate Average Speed
Thursday 5/8/14 (Substitute) Unit 3 Chapter 11 Day 4 OBJECTIVE: Discuss and investigate Acceleration. • Do Now: • Word Wise Chap 11 • Today: • Acceleration packet • Homework: • Chapter 11.3 GRWS
Friday 5/9/14 Unit 3 Chapter 11 Day 5 OBJECTIVE: Interpret speed and acceleration graphs. Investigate Average Speed, Velocity and Acceleration. • Do Now: • R & R Motion • Turn in: Speed Challenge Lab • Today: • Homework 11.3 GRWS - check and review • Acceleration packet and problems • Velocity and Acceleration Graphs • Homework: • Missing Assignments? Check Power School!
Monday 5/12/14 Unit 3 Chapter 11 Day 6 OBJECTIVE: Interpret speed and acceleration graphs. Investigate Average Speed, Velocity and Acceleration. • Do Now: • Speed and Motion Word search • Today: • Chapter 11 Notes - Motion • CSI: Bullets a Flyin’ • Study Guide and Problems • Homework: • Complete Study Guide and Problems
Tuesday 5/13/14 Unit 3 Chapter 11 Day 7 OBJECTIVE: Interpret speed and acceleration graphs. Investigate Average Speed, Velocity and Acceleration. • Do Now: • Formula Challenge • Today: • Review and Check -Study Guide + Problems • 20 Questions Review game • Physics Project Information • Homework: • Study for Chap 11 Quiz
Wednesday 5/14/14 Unit 3 Chapter 11 Day 8 OBJECTIVE: Demonstrate knowledge of Frame of Reference, Distance vsDisplacement, Average Speed, Velocity and Acceleration. • Do Now: • Do Now folder – 7 pages • Clear your desks. Get a calculator. • Today: • Chapter 11 Quiz • Notebook – 18 pages • Project Vocabulary – Forces and Motion • Homework: • FINISH PROJECT VOCABULARY
Calculating Average Speed Section 11.2
a. speed (or direction) b. direction (or speed) c. m/s2 Section 11.3
Measuring Acceleration Section 11.3
Distance-Time Graphs for Motion of Three Cars Section 11.2
Speed-Time Graphs Figures 16 and 17
Chapter Summary PHYSICS UNITChapter 11 - Motion
Frame of Reference • A frame of reference is necessary to describe motion accurately • FoR is a system of objects not moving with respect to one another • Relative motion describes movement from different FoRs • Ex: Looking at someone sitting next to you in a car vs. someone standing on the street corner watching the car vs. the billboard across the street
Distance vs Displacement • Distance is the total length of the path between two points • Displacement is a vector describing the ending point compared to the starting point. It includes: • The direction from starting point • The length of a straight line from the starting point to the ending point • The SI unit for length is the meter (m)
Solve… • A caterpillar travels 5 m east, 2 m north, 7 meters west, and 3 m south. a. What is the caterpillar’s total distance? b. What is the caterpillar’s displacement? 2. A science textbook is moved once around the perimeter of a table that is 1m by 2m and ends up in its initial position. a. What is the books total distance? b. What is the book’s displacement?
Average Speed • Speed is the change in distance divided by the change in time V= D T • Variations of the formula T= D and D=V x T V • Units of SPEED and VELOCITY are m/s • The SI unit for time is second (s) • Instantaneous Speed is how fast a speed is changing at a specific instant (speedometer)
Velocity • Velocity is a vector. • To describe a vector you must have both a magnitude (some kind of number) and a direction Ex : 5 m south, 10 km left, 2 inches forward • Circular paths experience a continuous change in velocity because the direction is constantly changing
Velocity • Combine velocities by vector addition • If both are in the same directionADD • If they are in different directionsSUBTRACT
Solve… Headwind • Tailwind
Solve… • A runner completes a 10.0 km race in exactly 30 minutes. • What is the runner’s average speed in km/min? • What is the runner’s average speed in km/hr? • When the outdoor emergency warning siren at Cheryl’s school was tested, the sound from the siren took 7 s to reach her house located 2.4 km from the school. What is the speed of the sound of the siren in m/s?
Graphs • Distance Time graphs show speed (m/s) and are linear graphs. • The slope of the line (rise/run) is the speed • A Speed Time graph shows acceleration (m/s2) • Nonlinear (curved) graphs show changing acceleration
Graphs Section 11.2
Acceleration • Acceleration is ANY change in speed or direction (any change in velocity) • Acceleration can be positive (speeding up) • Or negative (slowing down) • Or a result of changing direction (turning) • Instantaneous Acceleration is how fast a velocity is changing at a specific instant
Acceleration • Acceleration is the change in velocity divided by the change in time a = (Vf – Vi) T • Units of Acceleration are m/s2 • Acceleration of Gravity (Free Fall) is 9.8 m/s2
Solve… • An elevator is moving upward with a speed of 11 m/s. Three seconds later, the elevator is still moving upward but its speed has been reduced to 5 m/s. What is the elevator’s acceleration? • A plane starts to take off from a runway at 70 km/hr. It take the plane 30 seconds to get to that speed. What is the plane’s acceleration?
Quick Chapter 11 Quiz Problem Review…SHOW ALL YOUR WORK and INCLUDE THE CORRECT UNITS 1. Distance and DisplacementAn ambitious girl scout planned her cookie selling route: from her home she walked 5 blocks east, 2 blocks north, 7 blocks west, 3 blocks south, 3 blocks east and 1 block north. a. What is the Girl Scout’s total distance? b. What is the Girl Scout’s displacement from her home?
Quick Chapter 11 Quiz Problem Review…SHOW ALL YOUR WORK and INCLUDE THE CORRECT UNITS 2. Average Speed What is the average speed of a helicopter that flies 50 km in 20 minutes and then 30 km in 10 minutes? 3. Acceleration An elevator is moving upward with a speed of 16m/s. Four seconds later, the elevator stops on the sixteenth floor. What was the elevator’s acceleration?
Chapter 11 Formulas • Average Speed V = DD = T * V T = D T V • Acceleration A = (Vf – Vi) T = (Vf-Vi) T A Show your work! Include units!