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acceleration positive, negative, or zero?

acceleration positive, negative, or zero?

College Physics
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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**The Position vs. Time Graph** The graph shown is a position vs. time graph for an object. The position (in meters) is plotted on the vertical axis, and time (in seconds) is plotted on the horizontal axis. The graph displays a curved trajectory, indicating how the object's position changes over time. **Graph Description:** - The graph starts at a position above zero, gradually ascending to a peak, and then descends. - Initially, the graph is positively sloped, suggesting the object is moving in the positive direction and increasing in velocity. - After reaching the peak, the slope becomes negative, indicating the object is moving in the negative direction and decreasing in velocity. - The graph is a parabola, opening downwards. **Question:** Is the object's acceleration positive, negative, or zero? **Answer Options:** - Negative - Zero - Positive - It is impossible to tell **Explanation:** The curvature of the graph suggests that the acceleration is negative, as the object slows down in the upward direction and speeds up in the downward direction. This is characteristic of an object under the influence of gravity, or uniformly decelerating after reaching a certain height.
Transcribed Image Text:**The Position vs. Time Graph** The graph shown is a position vs. time graph for an object. The position (in meters) is plotted on the vertical axis, and time (in seconds) is plotted on the horizontal axis. The graph displays a curved trajectory, indicating how the object's position changes over time. **Graph Description:** - The graph starts at a position above zero, gradually ascending to a peak, and then descends. - Initially, the graph is positively sloped, suggesting the object is moving in the positive direction and increasing in velocity. - After reaching the peak, the slope becomes negative, indicating the object is moving in the negative direction and decreasing in velocity. - The graph is a parabola, opening downwards. **Question:** Is the object's acceleration positive, negative, or zero? **Answer Options:** - Negative - Zero - Positive - It is impossible to tell **Explanation:** The curvature of the graph suggests that the acceleration is negative, as the object slows down in the upward direction and speeds up in the downward direction. This is characteristic of an object under the influence of gravity, or uniformly decelerating after reaching a certain height.
Expert Solution
Step 1

The position-time time curves are given below :

For 0 acceleration:

Physics homework question answer, step 1, image 1

For positive acceleration :

Physics homework question answer, step 1, image 2

 

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