The value of the slope on a position-time graph indicates the object's velocity. Specifically, the slope represents the rate at which the object's position is changing with respect to time, or in other words, the object's speed and direction of motion. A positive slope indicates the object is moving in the positive direction (e.g., moving to the right), while a negative slope indicates the object is moving in the negative direction (e.g., moving to the left). The steeper the slope, the faster the object is moving. A horizontal line with zero slope represents zero velocity, indicating the object is not moving.
