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DISPLACEMENT is the distance measured in a certain direction. VELOCITY is the speed measured in a certain direction Displacement is measured in the same units as distance and velocity has the same units as speed.
Displacement is given the symbol s, velocity the symbol v and time the symbol t.

Velocity (v) = displacement (s)/time (t) space or space Displacement (s) = vt

It is important to realise that there is a difference between CONSTANT SPEED and CONSTANT VELOCITY. If a car is moving in a straight line at a constant speed then its velocity is also constant but if it turns a corner, still keeping its speed the same, its velocity will have changed because the direction in which it was moving has changed.

© Keith Gibbs 2009