An object’s position-time graph is a straight line with a negative slope. Is the velocity of this object positive, negative, or zero? Explain.
In order to determine the velocity of an object represented by a position-time graph, we need to analyze the characteristics of the graph.
In this case, the graph is described as a straight line with a negative slope. A negative slope indicates that the position of the object decreases as time increases. This means that the object is moving in the opposite direction to the positive direction of the coordinate axis.
Since velocity is a vector quantity that includes both magnitude and direction, we can conclude that the velocity of this object is negative. The negative sign indicates that the velocity is in the opposite direction of the positive axis.
If an object's position-time graph is a straight line with a negative slope, it means that the object is moving in the opposite direction of the positive coordinate axis. In other words, the object is moving in the negative direction.
The velocity of an object is defined as the rate of change of its position with respect to time. In this case, since the position-time graph has a negative slope, it indicates that the object's position is decreasing over time. Therefore, the velocity of the object is negative.
To summarize, when the position-time graph of an object is a straight line with a negative slope, the velocity of the object is negative, indicating that it is moving in the negative direction.
well, a positive slope means the distance is increasing, right?
so, ...