The equation used is s ut ½at 2. In our example 100 miles2 hours 50 mileshour about 80 kilometershour. The formula for distance if you know time duration and the average speed is.
The distance over the time will give you the objects speed.
Distance rate x time To solve for speed or rate use the formula for speed s dt which means speed equals distance divided by time. In a physics equation given a constant acceleration and the change in velocity of an object you can figure out both the time involved and the distance traveled. Measure the initial velocity. Average speed is distance divided by time.