Average Speed - The overall distance travelled divided by the time taken. v=d/t, Instantaneous Speed - Speed at a particular instant, v = length of card/time through light gate, Acceleration - The rate of change of velocity. Measured in m/s2, Distance from a Speed – time graph - Calculated from the area under the graph (triangles, squares, rectangles), Acceleration from a Speed – time graph. - The gradient of the graph. Extract data and use a = Δv/t, Air Resistance - Also known as drag. A form of friction due to moving through the air., Joules - The unit of energy, Newton’s first law - Forces are balanced. Object either at rest or moving at a constant speed., Friction - A force that opposes motion, this force increase as the object increases in speed.,

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