One must get the methods of measuring position and time working together if we are to obtain a reliable representation of motion. To that end we have developed a unique system composed of elements ...

The area under the graph can be calculated by: using geometry (if the lines of the graph are straight) counting the squares beneath the line (particularly if the lines of the graph are curved) ...

Speed-time graphs are very useful when describing the movement of an object. This is a velocity time graph of an object moving in a straight line due North. The displacement of this object is the area ...