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, Kinematics The study of motion
Motion A change in an object's location as measured by a particular observer
Distance (d) The total length of the path travelled by an object in motion
Direction The line an object moves along from a particular starting point
Scalar A quantity that has only magnitude (size)
Vector A quantity that has magnitude (size) and direction
Position The distance and direction of an object from a reference point
Displacement The change in position of an object
Average speed The total distance travelled divided by the total time taken to travel that distance
Average velocity The total displacement or change in position divided by the total time for that
displacement