Originally Posted by rousseau
Why is it that slowing down to make a turn at an intersection reduces the average speed on my computer from, say, 26.7 down a few ticks to 26.5, but then it takes a good kilometre or so of humping above 30 km/h to get it back up to 26.7?
1) As mentioned by a previous respondent, braking changes your speed more quickly than accelerating.
2) Average speed is distance/time. When you decelerate, time keeps advancing at the same rate, but your speed drops. As you accelerate, time continues to accrue. You're constantly calculating your average against an ever-larger denominator of time, so it takes more numerator (distance traveled) to regain the same pre-slowdown ratio.