Plotting the speed (vertical axis) and time (horizontal axis) allows for comparison and analysis of speed. One can determine the speed of an object at any given time or determine the time at which an object has a particular speed from reading a speed vs

Plotting the speed (vertical axis) and time (horizontal axis) allows for comparison and analysis of speed. One can determine the speed of an object at any given time or determine the time at which an object has a particular speed from reading a speed vs. time graph. No motion would be shown with a straight horizontal line on the horizontal axis. Constant speed would be represented with a straight line above or below the horizontal axis. The faster the motion, the farther away the line will be from the horizontal axis. Speeding up would be represented with a line moving away from the horizontal axis. Slowing down would be represented with a line moving toward the horizontal axis. Speed vs. time graphs should not be rules to memorize, but interpretations based on data-driven graphs.