Assuming all the values given are exact, what is Emmy's velocity at a time of 3.65 s? Enter your answer to at least three significant digits. 1.45 m/s
Assuming all the values given are exact, what is Emmy's velocity at a time of 3.65 s? Enter your answer to at least three significant digits. 1.45 m/s
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:**Question:**
Assuming all the values given are exact, what is Emmy's velocity at a time of 3.65 s? Enter your answer to at least three significant digits.
**Student Response:**
1.45 m/s
**Feedback:**
Incorrect
*Explanation:*
The image displays a question regarding the calculation of velocity, asking specifically for the value at a time of 3.65 seconds. The response box provided shows the student's input of "1.45 m/s," which has been marked as incorrect. It suggests that either the calculation needs to be revisited, or the precision of the answer does not meet the required three significant digits.

Transcribed Image Text:### Scenario
Emmy is standing on a moving sidewalk that moves at +2 m/s. Suddenly, she realizes she might miss her flight, so begins to speed up, but then she hears over the PA system that her flight is delayed.
### Task
The acceleration versus time graph shows Emily's acceleration during the 5-second time interval in which all of the events occur. In the velocity versus time graph, construct a plot of Emmy's velocity over this same time period.
### Acceleration vs Time Graph Details
- **0 to 1 second**: Acceleration is +3 m/s².
- **1 to 2 seconds**: Acceleration drops to +1 m/s².
- **2 to 3 seconds**: Acceleration is 0 m/s².
- **3 to 4 seconds**: Acceleration is -4 m/s².
- **4 to 5 seconds**: Acceleration increases to 0 m/s².
### Velocity vs Time Graph (Current)
- The graph incorrectly shows a constant velocity of 0 m/s over the 5-second period, which is labeled as "incorrect".
To correctly construct the velocity graph, consider the initial velocity of +2 m/s and apply the changes in acceleration over each interval.
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