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omc1
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Homework Statement
A plot of Calvin's Mom's position vs. time is shown. Rank the acceleration of the five regions (e.g., A, B, etc.) from most negative to most positive
See attachment!
omc1 said:Homework Statement
A plot of Calvin's Mom's position vs. time is shown. Rank the acceleration of the five regions (e.g., A, B, etc.) from most negative to most positive
See attachment!
Homework Equations
The Attempt at a Solution
I think that b is the most negative and c is zero, a is increasing acceleration but I just don't understand how to read this graph. Please help my final is tomorrow! thanks
th3c00n said:Bumping an old thread for a little help on a similar question.
I am given a position vs time graph:
I am asked where acceleration is positive and where it is negative.
I believe I understand that when the slope of the line is increasing then the acceleration is positive. When the slope of the line is decreasing then the acceleration should be negative. Correct?
So from what I see here acceleration at the given points should be:
A - Negative
B - 0
C - Negative
D - Positive
E - 0
F - Positive
Yet these answers are being marked as incorrect when I submit them. Can PF lend me a hand here? Thank you!
th3c00n said:B and E appear to be where the object changes direction. An earlier part of the question asked where velocity was 0 and those were the correct answers. Can you have acceleration without velocity?
th3c00n said:Apparently you can, that was the correct answer, thank you!
Toranc3 said:Yo if the graph is position vs time then velocity would be zero when the slope is zero but if they ask for acceleration then its different. (refer back to my original post).
th3c00n said:Yep, got it now. I guess I wasn't thinking of local min/max points as a change in slope. Not sure why... Ha. Thank you again!
I see that you're new to PF, so Welcome!th3c00n said:Bumping an old thread for a little help on a similar question.
I am given a position vs time graph:
...
A position versus time graph is a visual representation of the position of an object over time. It shows how the position of the object changes as time passes.
To interpret a position versus time graph, you can look at the slope of the line. A steeper slope indicates a faster rate of change in position, while a flatter slope indicates a slower rate of change. The position of the object can also be determined by looking at the y-axis, while the time can be determined by looking at the x-axis.
A position versus time graph can tell us about an object's speed and direction of motion. A steep slope indicates a high speed, while a flat slope indicates a low speed. The direction of the slope also indicates the direction of motion, with a positive slope indicating motion in one direction and a negative slope indicating motion in the opposite direction.
A position versus time graph shows the position of an object at different points in time, while a velocity versus time graph shows the velocity or speed of an object at different points in time. The slope of a position versus time graph gives the velocity, while the slope of a velocity versus time graph gives the acceleration of the object.
Yes, a position versus time graph can be used to predict future motion by looking at the trend of the graph. If the graph continues in a straight line, the object will continue to move at a constant speed. However, if the graph starts to curve, it indicates a change in speed or direction of the object's motion.