How to use the book · quiz worked solutions

Tried the quiz first? Good. Here’s how to work through each answer. Follow the link beside a question to jump back to its original spot. Questions marked Extra exploration go beyond this AP Physics 1 course; Book controls questions explain the interface.

Foreword / How-to-Use · question 1

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Question: Which of the following is a collection of images you might find in this guide that you can browse through at will?

Answer: Gallery.

1. Look for a set of related pictures you can move through. Why: The question asks about browsing several images.

2. Choose Gallery. Why: A gallery groups frames with previous and next controls.

Foreword / How-to-Use · question 2

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Question: Which of the following allows you to click on an “information hotspot”, allowing you to learn more about the image?

Answer: Interactive Image.

1. Look for a picture with clickable information spots. Why: The clue describes annotations on one image.

2. Choose Interactive Image. Why: Its buttons reveal the figure notes.

Foreword / How-to-Use · question 3

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Question: What are you currently interacting with?

Answer: Pop Quiz.

1. Notice that you are choosing and checking an answer. Why: That is the quiz interaction.

2. Choose Pop Quiz. Why: The old iPad choice describes the original device, not the kind of activity in this browser.

Foreword / How-to-Use · question 4

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Question: Which of the following allows you to click on an “information hotspot”, allowing you to learn more about the image?

Answer: The second image, Interactive Image.

1. Use the clue about an information hotspot. Why: It asks for annotations rather than a collection of frames.

2. Choose the interactive-image picture, option 2. Why: Its controls reveal information attached to the figure.

Foreword / How-to-Use · question 5

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Question: Match each label with the correct image.

Answer: Target 1: Gallery; Target 2: Pop Quiz.

1. Match the multi-picture browsing example to Gallery. Why: A gallery lets you change frames.

2. Match the question-and-answer example to Pop Quiz. Why: A quiz asks you to respond and checks that response.

Foreword / How-to-Use · question 6

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Question: Use the calculator in the bottom right-hand corner to solve the following equation: y = 4 cos ( 0.67 π )

Answer: y ≈ −2.04 in radian mode; the historical screenshot’s 12.57 key is incorrect.

1. Set the calculator to radians and evaluate 0.67π ≈ 2.1049. Why: Multiplying by π specifies an angle in radians here.

2. Calculate y = 4 cos(2.1049) ≈ −2.036. Why: Cosine is negative in quadrant II; a positive answer cannot fit this expression.