# MP3 - MasteringPhysics Assignment Print View

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[ Print View ] PH1110A2008 Assignment 3 Due at 11:59pm on Saturday, September 6, 2008 View Grading Details Analyzing Position versus Time Graphs: Conceptual Question Two cars travel on the parallel lanes of a two-lane road. The cars’ motions are represented by the position versus time graph shown in the figure. Answer the questions using the times from the graph indicated by letters. Part A At which of the times do the two cars pass each other? Hint A.1 Two cars passing Hint not displayed ANSWER: Part B Are the two cars traveling in the same direction when they pass each other? ANSWER: yes no Part C At which of the lettered times, if any, does car #1 momentarily stop? Hint C.1 Determining velocity from a position versus time graph Hint not displayed ANSWER: Part D At which of the lettered times, if any, does car #2 momentarily stop? Hint D.1 Determining velocity from a position versus time graph Hint not displayed ANSWER: MasteringPhysics: Assignment Print View http://session.masteringphysics.com/myct/assignmentPrint?assig. .. 1 of 7 10/13/2008 8:00 PM

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Part E At which of the lettered times are the cars moving with nearly identical velocity? Hint E.1 Determining Velocity from a Position versus Time Graph Hint not displayed ANSWER: Going for a Drive Learning Goal: To gain a qualitative understanding of kinematics and how the qualitative nature of position and velocity versus time graphs relates to the equations of kinematics. In this problem, you will explore kinematics using an applet that simulates a car moving under constant acceleration. When you open the applet , you will see three sliders that allow you to adjust the initial position , the initial velocity , and the acceleration . Set the initial position to 0 , the initial velocity to and the acceleration to 5 . Run the simulation. Notice that, as the movie proceeds, pictures of the car remain at certain points. Once the simulation is over, these pictures form a motion diagram--a representation of motion consisting of pictures taken at equal time intervals during the motion. In this case, the interval between pictures is one second. Below the movie, the position of the car as a function of time is graphed in green. Run the simulation several times, paying attention to how the graph and the motion diagram/movie of the car's motion relate to each other. Part A Which of the following describe the relationship between the motion diagram/movie and the graph? Check all that apply. ANSWER: When the slope of the graph is close to zero, the pictures in the motion diagram are close together. When the slope of the graph is steep, the car is moving quickly. When the slope of the graph is positive, the car is to the right of its starting position. When the
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## This note was uploaded on 10/13/2008 for the course PH 1110 taught by Professor Kiel during the Spring '08 term at WPI.

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MP3 - MasteringPhysics Assignment Print View

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