Physics > QUESTIONS & ANSWERS > SCIENCE 1 Reading Notes Answers - Unit P01: Motion in One Dimension (All)

Name: ___[ANSWERS]___ Unit B01 – Motion in One Dimension Reading Notes Directions: Read each section on the night it is assigned, with emphasis on answering the questions below. Do NOT do a... ny examples (unless you really want)—we do those in class. Section 2-1: Reference Frames and Displacement Explain what “frame of reference” is in terms a junior-high student could understand. Explain the difference between “distance” and “displacement”. Explain what a vector is. Explain what a scalar is. What letter is the symbol for displacement used in mathematical equations? Distance is measured in what units? Displacement is measured in what units? [UNAUTHORIZED COPYING OR USE OF ANY PART OF THIS PAGE IS ILLEGAL] 1 Example: Consider the coordinate axes below. Each box represents 1 meter. Fred’s position is Point A, which is at (x = 3, y = –3). Mark this point. Fred walks 5 meters to the left, 5 meters up, and 5 meters to the right, arriving at point B. Mark point B and Fred’s path on the diagram. What distance did Fred travel? What is the distance between points A and B? What is Fred’s displacement from his original position? Section 2-2: Average Velocity Give a word-equation for average speed. Give a word-equation for average velocity. What is the difference between speed and velocity? [UNAUTHORIZED COPYING OR USE OF ANY PART OF THIS PAGE IS ILLEGAL] 2 What is the symbol for time? Time is measured in what units? What is the symbol for velocity? Velocity is measured in what units? How is “average” indicated on the symbol for velocity? What symbol represents the word “change”? What mathematical operation is used when finding “change Example: Consider the coordinate axes below. Each box represents 1 meter. Frank’s position is Point C, which is at (x = 4, y = 4). Mark this point. Frank walks down at a speed of 2 m/s for 4 seconds. He then immediately walks left 3 m/s for 3 seconds. He waits for 5 seconds, and then walks 1 m/s upward for 8 seconds and stops at point D. Plot point C, point D, and Frank’s path. During this time, what distance did Frank travel? What is the distance between points C and D? What is Frank’s displacement from his original position? What is Frank’s average speed during this time? What is Frank’s average velocity during this time? Originally, Frank waited for 5 seconds (below point D). If he wanted to make his average speed half as much, how long should he have waited? Explain your reasoning. Would this amount of wait-time have also halved his average velocity? Yes Section 2-3: Instantaneous Velocity Explain what “instantaneous velocity” is in the simplest terms possible. Make sure you point out the difference between this and “average velocity”. What does a speedometer in a car measure? (a) Average Speed (b) Average Velocity (c) Instantaneous Speed (d) Instantaneous Velocity Explain why. What two instruments in a car can be used to measure the car’s average speed during a long car trip? Explain how to use these instruments to calculate average speed. Section 2-4: Acceleration Write a word-equation for acceleration. What is the symbol for acceleration? Acceleration is measured in what units? Explain where the “square” in the units for acceleration comes from. Explain the difference between velocity and acceleration using the words “rate of change of”. Acceleration is a vector. Explain how to determine the direction of acceleration. Example: Each diagram shows a car’s position at one second intervals as it travels along a line in the same direction. The solid black car is the final position at time = 5 seconds. For each diagram, make a graph of position vs. time, and draw an arrow indicating the direction of velocity and an arrow for acceleration: Section 2-5: Motion at Constant Acceleration Write the equation for velocity as a function of time for constant acceleration. Write the equation for average velocity under constant acceleration. Write the equation for position as a function of time for constant acceleration. Write the equation that relates velocity, acceleration, and position (the “no time” equation). Identify every symbol that you used in the four equations above. Section 2-6: Solving Problems | Example: A runner finishes a 100-meter dash in 8 seconds. Determine his average speed. Example: A car can go from zero to 30 m/s in 2 seconds. Determine the car’s average acceleration. | Example: Another car can go from zero to 30 m/s in 3 s. How far does the car go while it accelerates? Example: The radius of Earth’s orbit is 1.5 ´ 1011 m. How fast does Earth move as it orbits the Sun? [ Section 2-7: Falling Objects What type of motion is free-fall? (a) Constant Position (b) Constant Velocity (c) Constant Acceleration (d) Changing Acceleration What does the µ symbol mean in the top paragraph on page 33 that states “d µ t2”? How is that different than the = symbol? Explain Figure 2-17 on page 33. Why does the paper fall differently than the ball in one case, but not in the other? What is the value of the acceleration of gravity on Earth’s surface? What symbol do we give this number? | | Example: A person throws a ball upward near the edge of a building as shown. Ignore air resistance. The first white dot is the position of the ball when it leaves the thrower’s hand. Each white dot after that represents the ball’s position every second after the ball leaves the thrower’s hand. In the table below, the time represents how many seconds after the ball leaves the thrower’s hand. Fill in the boxes representing the ball’s velocity at each time. When the ball is at we know for sure its velocity is Each second, the ball’s velocity The speed is almost the same as velocity, except Fill in the ball’s acceleration at each time. How does the ball’s acceleration vary with time [ Graphical Analysis of Linear Motion How can a curve be considered to have a slope? How can velocity at a certain time be found by looking at a position vs. time graph? How can the change in position between two times be found from a velocity vs. time graph? How can acceleration at a certain time be found by looking at a velocity vs. time graph? How can the change in velocity between two times be found from an acceleration vs. time graph? Example: Consider the following x vs. t graph. Estimate the velocity at: During what time intervals is the velocity positive? negative? During what time intervals is the acceleration positive? negative? zero? What is the object’s average velocity between 0 and 10 seconds? Example: Consider the following v vs. t graph. What is the acceleration at: t = 11 s? – How far, and in which direction, did the object travel: from t = During what time intervals is the object speeding up? slowing down? During what time intervals is the acceleration positive? negative? zero? If the object is at Draw an acceleration vs. time graph and a position vs. time graph (assuming the object starts at –5 m). Write the appropriate equation in each box next to the description: On an x vs. t graph, the slope is and the area under the graph is meaningless. On a v vs. t graph, the slope is and the area under the graph is On an a vs. t graph, the slope is and the area under the graph is Determine the sign of velocity and acceleration for each of the following diagrams: Which two pairs of graphs represent the same motion? A and G C and H [ Example Problem: A ball is dropped from the top of a 200 m tall building. It freely falls for 4 seconds; at time = 4 seconds, the ball reaches its terminal velocity. Determine the following: | The distance the ball travels in the first 4 seconds while it freely falls. The terminal velocity of the ball after 4 seconds of falling. | The total time it takes for the ball to reach the ground. Draw a graph of the distance the ball has traveled (downward) as a function of time. [Show More]

Last updated: 1 year ago

Preview 1 out of 12 pages

Management> QUESTIONS & ANSWERS > Global Logistics and Supply Chain Management, 4th Edition by Mangan 4th edition Quiz - Answers (All)

Test Bank for Global Logistics and Supply Chain Management, 4th Edition, 4e by Mangan, Lalwani, Calatayud TEST BANK ISBN-13: 9781119702993 Full chapters included (This book has combined Test Bank-Ch...

By Test-Bank Lounge , Uploaded: Sep 29, 2022

**$10**

*NURSING> QUESTIONS & ANSWERS > NURSING NR 228 Nutrition Week 7 edapt - Nutrition and Biliary Health- nutrition for gastrointestinal health - Chamberlain College of Nursing (All)

NURSING NR 228 Nutrition Week 7 edapt - Nutrition and Biliary Health- nutrition for gastrointestinal health - Chamberlain College of Nursing

By QuizMaster , Uploaded: Mar 29, 2023

**$10.5**

*NURSING> QUESTIONS & ANSWERS > NURSING NR 228 Nutrition- Week 3 nutrition edapt - Introduction to Energy - Chamberlain College of Nursing (All)

NURSING NR 228 Nutrition- Week 3 nutrition edapt - Introduction to Energy - Chamberlain College of Nursing

By QuizMaster , Uploaded: Mar 29, 2023

**$3**

Mathematics> QUESTIONS & ANSWERS > MATHS 221 Week 6 Homework (All)

MATHS 221 Week 6 Homework 1. A consumer analyst reports that the mean life of a certain type of alkaline battery is no more than 36 months. Write the null and alternative hypotheses and note which i...

By Bobweiss , Uploaded: Aug 21, 2020

**$12.5**

*NURSING> QUESTIONS & ANSWERS > American Heart Association BLS Instructor Essentials Exams A and B Questions and 100% correct answers (All)

American Heart Association BLS Instructor Essentials Exams A and B Questions and 100% correct answers

By Prof.Pierro , Uploaded: Jun 23, 2022

**$16.5**

Human Nutrition> QUESTIONS & ANSWERS > Servsafe Manager 2022 (All CHAPTERS 1-9) Tests(Answered) (All)

Servsafe Manager 2022 (All CHAPTERS 1-9) Tests(Answered) Servsafe Manager (Chapter 1) What is a foodborne illness outbreak? - When two or more people report the same illness from eating the same f...

By Professor Lynne , Uploaded: Aug 07, 2022

**$14.5**

Information Technology> QUESTIONS & ANSWERS > Google Cloud Sales Credential (All)

Google Cloud Sales Credentialou are in a sales team meeting with a company whose information technology (IT) department is not very familiar with what is cloud technology. What is the best way to de...

By AMAZING GRACE , Uploaded: Aug 22, 2022

**$9.5**

*NURSING> QUESTIONS & ANSWERS > Test Bank For Pharmacotherapeutics for Advanced Practice A Practical Approach 5th Edition by Arcangelo; Peterson; Wilbur; Jennifer A. Reinhold Chapter 1-56 (All)

Excel in advanced practice pharmacotherapeutics exams with the 'Test Bank for Pharmacotherapeutics for Advanced Practice: A Practical Approach' 5th Edition by Virginia Poole Arcangelo, Andrew Peterson...

By Dickson , Uploaded: Jan 03, 2024

**$12**

*NURSING> QUESTIONS & ANSWERS > Advanced Medical Life Support (AMLS) Post Test Q&A 2023 (All)

1. A 45-year-old patient is found supine on the floor. Healthcare providers note pinpoint pupils, shallow respirations, and vomitus in and around the mouth. What course of action should be taken n...

By Exammate , Uploaded: Aug 14, 2023

**$7.5**

Law> QUESTIONS & ANSWERS > CLG 0010 DOD GOV. COM. PUR. CARD OVERVIEW EXAM Questions and Answers. (All)

CLG 0010 DOD GOV. COM. PUR. CARD OVERVIEW EXAM Questions and answers, 2022 update, Rated A+ whose responsibility is it to comply with Government agency standards of conduct? (select the three tha...

By bundleHub Solution guider , Uploaded: Aug 28, 2022

**$10.5**

Connected school, study & course

**About the document**

Uploaded On

Sep 14, 2020

Number of pages

12

Written in

This document has been written for:

Uploaded

Sep 14, 2020

Downloads

0

Views

52

Avoid resits and achieve higher grades with the best study guides, textbook notes, and class notes written by your fellow students

Your fellow students know the appropriate material to use to deliver high quality content. With this great service and assistance from fellow students, you can become well prepared and avoid having to resits exams.

Your fellow student knows the best materials to research on and use. This guarantee you the best grades in your examination. Your fellow students use high quality materials, textbooks and notes to ensure high quality

Get paid by selling your notes and study materials to other students. Earn alot of cash and help other students in study by providing them with appropriate and high quality study materials.

In Browsegrades, a student can earn by offering help to other student. Students can help other students with materials by upploading their notes and earn money.

We're available through e-mail, Twitter, Facebook, and live chat.

FAQ

Questions? Leave a message!

Copyright © Browsegrades · High quality services·