A velocity-time graph is a graphical representation of an object's velocity over time. The x-axis represents time and the y-axis represents velocity. The slope of the line on the graph represents the acceleration of the object.
To find acceleration on a velocity-time graph, you can calculate the slope of the line using the formula: acceleration = change in velocity / change in time. Alternatively, you can also find the area under the line on the graph, which represents the change in velocity over a specific time interval, and divide it by the time interval to find the average acceleration.
Positive acceleration on a velocity-time graph is represented by a line with a positive slope, indicating that the object is increasing its velocity over time. Negative acceleration, also known as deceleration, is represented by a line with a negative slope, indicating that the object is decreasing its velocity over time.
Yes, a velocity-time graph can be used to determine an object's initial velocity. The initial velocity is represented by the y-intercept on the graph, which is the point where the line intersects with the y-axis. This is the velocity of the object at the beginning of the time interval.
The shape of a velocity-time graph can provide information about an object's motion. A straight line with a positive slope indicates constant acceleration, while a curved line indicates changing acceleration. A horizontal line at zero velocity indicates that the object is at rest. The steeper the slope of the line, the greater the acceleration of the object.