9.5 Relating Speed To Time And Distance Notes

Relating Speed to Time and Distance Average speed - the total distance divided by the total time - this would include changes of speed and stops. The defining formula for average speed is : vav = ∆ d ∆t The change in a measurement is signified by using the Greek letter ‘delta’

∆

Instantaneous speed - the speed measured at a moment in time Constant speed - a condition which exists when the same instantaneous speed is measured over a specific time frame

For example: If over a 5 minute period the speed was checked 3 times and each time the speed was the same, one could say that this object had constant speed.