If a graph shows time on the horizontal axis and speed on the vertical axis, a stright horizontal line across the graph would indicate?

The speed remained the same over the designated time periods.

A straight horizontal line on a graph of time versus speed would indicate that the speed is constant over time. This means that the object is maintaining a consistent speed and not accelerating or decelerating.

A straight horizontal line across the graph would indicate a constant speed.

To understand why, let's break down the components of the question. The horizontal axis represents time, while the vertical axis represents speed. In this scenario, speed refers to the rate at which an object is changing its position over time.

A straight horizontal line means that the value on the y-axis (speed) remains constant, regardless of the changes in the x-axis (time). This indicates that the object maintains a consistent speed throughout the given time interval.

To further solidify this understanding, you can visualize it by considering an example. Imagine a car traveling on a straight road at a constant speed of 60 miles per hour. If you plot the data points of its speed at different intervals of time, you would see a straight horizontal line at the height of 60 on the graph. This indicates that the car is moving at a constant speed of 60 miles per hour over the entire time period shown on the graph.

Therefore, a straight horizontal line on a graph with time on the horizontal axis and speed on the vertical axis would indicate a constant speed.

No motion