Motion - When an object changes its position over time, Stationary - Not moving; position doesn’t change, Speed - Distance travelled per unit of time, Distance - How far something travels, Time - How long something takes, SI unit of distance - Metre (m), SI unit of time - Second (s), SI unit of speed - Metre per second (m/s), Straight line on a distance–time graph - Constant speed, Flat line on a distance–time graph - Stationary object,

Speed, Units, and Graphs

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