Description
Speed-time graphs, also known as velocity-time graphs, are graphical representations of an object's speed or velocity plotted against time. These graphs are commonly used in physics to illustrate the motion of objects. The horizontal axis (x-axis) represents time, typically measured in seconds (s), while the vertical axis (y-axis) represents speed or velocity, usually measured in meters per second (m/s). If an object moves at a constant speed, the speed-time graph will be a horizontal line parallel to the time axis. This indicates that the speed remains the same over time. If an object undergoes uniform acceleration (constant rate of change of velocity), the speed-time graph will be a straight line with a positive gradient (slope). The steeper the slope, the greater the acceleration. If an object undergoes uniform deceleration (negative acceleration), the speed-time graph will be a straight line with a negative gradient (slope). The steeper the slope, the greater the deceleration. If the acceleration of an object changes over time, the speed-time graph will be curved rather than linear. The area under the speed-time graph represents the distance traveled by the object. For example, the distance traveled during a particular time interval can be calculated by finding the area under the graph for that interval.
