1) an objects position-time graph is a straight line with a positive slope. is the velocity of this object positive,negative or zero.
negative
2) an objects position-time graph is a straight line with a negative slope. is the velocity of this object positive,negative or zero.
-zero
1) positive
V = dX/dt = slope of position time curve
2) negative is negative period !
The velocity of an object is determined by the slope of its position-time graph.
1) If the position-time graph is a straight line with a positive slope, then the velocity of the object would be positive. This means that the object is moving in the positive direction along the x-axis.
2) Conversely, if the position-time graph is a straight line with a negative slope, then the velocity of the object would be negative. This means that the object is moving in the negative direction along the x-axis.
In both cases, the velocity is not zero.
To determine the velocity of an object based on its position-time graph, you need to find the slope of the graph. The slope represents the rate at which the object's position changes over time, which is equivalent to its velocity.
1) In the first scenario, where the position-time graph is a straight line with a positive slope, the velocity of the object is positive. This means the object is moving in the positive direction along the position axis.
To find the velocity, you can find any two points on the line and calculate the slope between them. The slope of a straight line is determined by taking the change in position (vertical distance) divided by the change in time (horizontal distance). If the slope is positive, the velocity is positive.
2) In the second scenario, where the position-time graph is a straight line with a negative slope, the velocity of the object is negative. This means the object is moving in the negative direction along the position axis.
Again, you can find any two points on the line and calculate the slope between them. If the slope is negative, the velocity is negative.
In summary, for a straight line position-time graph:
- Positive slope indicates positive velocity (moving in the positive direction)
- Negative slope indicates negative velocity (moving in the negative direction)