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How Can you tell from a velocity-time graph that the velocity is constant?
Wiki User
∙ 12y ago
velocity is nothing but speed of a body in the given direction.
suppose if body is moving with constant velocity then VT graph will be parallel to
the X -axis, if not then the VT graph is not parallel to the X-axis it means then object is moving with different velocity or it has its dierection or both velocity and aswell as direction.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoYes. If the graph is zero everywhere, then the object is stationary.
If the object is not stationary, then the graph must depart from zero.
Yes, the object is stationary when the velocity is zero, the point or points where the graph crosses the horizontal time axis
Wiki User
∙ 9y agoWell, it's hard to graph a velocity-time graph in the first place, since velocity is a vector. I assume you mean speed-time graph. In that case, when you are moving faster, the velocity will simply be higher up in the graph.
Wiki User
∙ 12y agoThe velocity will be constant when it remains parallel to the time scale.
Wiki User
∙ 11y agoThe velocity has changed from positive to negative, or vice-versa.
Wiki User
∙ 8y agoif the velocity is positive to start with it changes direction when the velocity is less than zero; that is, when it is negative.
Wiki User
∙ 7y agoIf the line is a horizontal line coincident with the x (time) axis and at y = 0 (velocity) axis it is stationary
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Why does the y-value of the velocity vs. time graph stay constant?
You're looking at one specific velocity/time graph that we can't see. From your description, we can tell that the object whose motion is described by that graph is moving at a constant rate of speed ... which is exactly what you just said while looking at the graph.
Does a velocity graph tell you where to start?
No. It will tell you WHEN but not where.
When velocity is changing what is happening to the slope on a position versus time graph?
That slope is the 'speed' of the motion. If the slope is changing, then the speed is changing. That's 'accelerated' motion. (It doesn't matter whether the speed is growing or shrinking. It's still 'accelerated' motion. 'Acceleration' does NOT mean 'speeding up'.)
What does the slope of the line on a position versus time graph tell you about the objects speed?
The distance versus time graph shows the position of the object. The slope of the line shows the velocity of the object. The velocity is the direction and speed of an object. If your slope has a positive slant that means you are going in a positive direction. If the slope has a negative slant your object is going in a negative direction. If your slope is zero (a horizontal line) that means your object has stopped and is about to change directions. In case you didnt know a positive slant looks like this on a graph.... / a negative slant looks like this on a graph.... \ postive is like sloping up a hill negative is like falling down the hill
How can I tell when two objects have the same velocity on a position graph?
If the position is graphed vs time, then the slope (rate of change of position with respect to time) will be the same (parallel).
Why does the y-value of the velocity vs. time graph stay constant?
You're looking at one specific velocity/time graph that we can't see. From your description, we can tell that the object whose motion is described by that graph is moving at a constant rate of speed ... which is exactly what you just said while looking at the graph.
Can you tell from a velocity-time graph whether an object is stationary?
If the curve is horizontal, then the speed is constant. If that horizontal graph lies on the x-axis, then the constant speed is zero, and the object is stationary.
What does a curved line on a distance versus time graph tell you?
It tells you that the velocity of the body is not constant. There is acceleration or deceleration.
What do x-t graphs look like for constant velocity?
The x-t graph can't tell you anything about direction, so you can only make observations regarding speed, not velocity. For constant speed, the x-t graph is a straight line. The slope of the line is numerically equal to the constant speed.
Does a velocity graph tell you where to start?
No. It will tell you WHEN but not where.
If a graph shows time on the horizonal axis and speed on the vertical axis a straight horizontal line across the graph would indicate?
The straight horizontal line would indicate constant speed.(NOT constant velocity. The velocity could very well be changing, but the graphdoesn't tell you anything about the direction of the motion, only that the speedis constant.)
What does the slope of the line on a distance-time graph tell you?
velocity
What one thing does a velocity-time graph not tell you about your object that a position-time graph does?
Distance covered at a given time.
How do you tell whether a graph shows a constant or variable rate of change?
The slope of each point on the line on the graph is the rate of change at that point. If the graph is a straight line, then its slope is constant. If the graph is a curved line, then its slope changes.
What does a velocity-time graph tell us?
How the speed of something changes over time.
How can you tell the difference between a speed and a velocity graph?
Very simply . . . you're not likely to ever see a velocity graph. At least notuntil you get into advanced engineering or science.Velocity is speed and its direction . . . more information than can be displayedon a simple graph.
How can you tell if an object is accelerating in a distance versus time graph?
The slope of the line of a distance versus time graph is the velocity of the object. If this is a constant, in other words the graph is a straight line, the object is not changing its velocity and so is not accelerating. If the object is accelerating, the velocity of the object will be changing, thus the graph will not be a straight line, but a curve - the amount of curvature (and direction) tells you how much the object is accelerating (and in what direction - velocity and acceleration are vector quantities with both magnitude and direction).
