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3/7/24, 8:39 PM 1.2.2.2 Building a Constant Acceleration Model: Mechanics, Heat, & Sound - HS - Wilkes, Deborah https://onramps.instructure.com/courses/3820435/quizzes/10615079 1/11 1.2.2.2 Building a Constant Acceleration Model Due Sep 11, 2023 at 11:59pm Points 10 Questions 10 Available Sep 5, 2023 at 12am - Sep 13, 2023 at 11:59pm Time Limit None Allowed Attempts 2 Instructions This quiz was locked Sep 13, 2023 at 11:59pm. ATTEMPT HISTORY Attempt Time Score KEPT Attempt 2 11 minutes 9 out of 10 LATEST Attempt 2 11 minutes 9 out of 10 1.2.2.2 Practice Using Constant Acceleration In this activity, you will Practice using kinematic equations to model a variety of situations. Before you begin, you'll need paper and a pencil or pen. As you work through the problems consider the following Guiding Questions: 1. What can we say about the slope of a v-t graph and a-t graph if we have a curved d-t graph? 2. What are the relationships between the graphs? 3. What equations have we developed? You will be asked to submit a photo of your work at the end of this assignment. You can download and print the original handout here (https://onramps.instructure.com/courses/3820435/files/265668182/download? wrap=1) (https://onramps.instructure.com/courses/3820435/files/265668182/download? download_frd=1) .

3/7/24, 8:39 PM 1.2.2.2 Building a Constant Acceleration Model: Mechanics, Heat, & Sound - HS - Wilkes, Deborah https://onramps.instructure.com/courses/3820435/quizzes/10615079 2/11 Attempt Time Score Attempt 1 2,276 minutes 0 out of 10 * * Some questions not yet graded Score for this attempt: 9 out of 10 Submitted Sep 11, 2023 at 6:09pm This attempt took 11 minutes.   Question 1 1 / 1 pts  IMG_5391.JPG (https://onramps.instructure.com/files/270657800/download)  Question 2 1 / 1 pts  IMG_5391.JPG (https://onramps.instructure.com/files/270657804/download)  Question 3 1 / 1 pts  IMG_5391.JPG (https://onramps.instructure.com/files/270657842/download)  Question 4 1 / 1 pts  IMG_5392.JPG (https://onramps.instructure.com/files/270657887/download) Instructions: We have used different tools to describe motion. Those tools include graphs, diagrams, equations, and words. In this activity, you should use as many of those as possible to create a model for the situation described. Each tool you use will help create a more complete model of the situation. (Hint: start by listing the variable you know and find the variables you don't.) A coal train in Montana starts from rest and accelerates at for . A motorcycle traveling at slams on the brakes to avoid an accident. The motorcycle skids before stopping. A lime is thrown upward with a velocity of . An egg is dropped from a building that is high.

3/7/24, 8:39 PM 1.2.2.2 Building a Constant Acceleration Model: Mechanics, Heat, & Sound - HS - Wilkes, Deborah https://onramps.instructure.com/courses/3820435/quizzes/10615079 3/11  Question 5 1 / 1 pts  IMG_5392.JPG (https://onramps.instructure.com/files/270657893/download)  Question 6 1 / 1 pts  IMG_5392.JPG (https://onramps.instructure.com/files/270657896/download)  Question 7 1 / 1 pts  IMG_5393.JPG (https://onramps.instructure.com/files/270657955/download)  UnansweredQuestion 8 0 / 1 pts An emu moving with constant acceleration covers the distance between two points that are apart in . Its speed as it passes the second point is . A monorail starts from rest and accelerates at a rate of for 10 s. Then it runs at a constant speed for 74 s and then slows down at a rate of . A speedboat traveling at a constant velocity of passes a police boat at rest. The police boat decides that this is much too fast and starts his boat seconds after the speedboat passes. The police boat accelerates at for , then travels at a constant velocity. When and where does the cop catch the speedboat? Super Challenge Problem Determined to test gravity, a student walks off the Burj Khalifa (aka really tall building) in Dubai, which is high, and falls freely. His initial velocity is zero. Jetpack Woman leaves the roof later to save the student with an initial velocity downward and then is in free-fall. In order both to catch the student and to prevent injury to her, Jetpack Woman should catch the student at a sufficiently great height and arrive at the ground with zero velocity. The upward acceleration that accomplishes this is provided by Jetpack Woman’s jet pack, which she turns on just as she catches the student; before then the student is in free-fall. To prevent discomfort to the student, the magnitude of the acceleration is limited to four times gravity ( ). (You may assume that Jetpack Woman has superpowers, which

3/7/24, 8:39 PM 1.2.2.2 Building a Constant Acceleration Model: Mechanics, Heat, & Sound - HS - Wilkes, Deborah https://onramps.instructure.com/courses/3820435/quizzes/10615079 4/11  Question 9 1 / 1 pts Your Answer: allow her to change velocity instantaneously.) How high above the ground must Jetpack Woman catch the student? Upload: Submit a photo of your work here. You may submit your work in one of the following ways: Embed an image Upload a JPG or PNG using the Image Upload Upload a document Upload a Document

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