In uniform motion, an object has a constant velocity; that is a constant 'speed' in a straight line. (note, that speed may be positive (going forward), negative (going backward) or stationary).

Velocity and acceleration are 'vector' quantities; they have both a magnitude and a direction

Since velocity and acceleration are vectors, we can say that the velocity or the acceleration of an object has changed if either the magnitude or the direction changes

The definition of 'average velocity' and 'average acceleration' are used as the building blocks for our key 'classical physics motion equations'



Motion can be analysed using displacement/time (s/t) graphs, velocity/time (v/t) and acceleration/time graphs (a/t)

Of note, calculus was invented for use in analysing equations of motion

The constant acceleration due to gravity near the surface of the Earth is approximately g=9.80ms^-2

Motion under a constant acceleration can be analysed using the following 3 equations



All physics calculations use SI units (metres (m), seconds (s), kilograms (kg)).

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