3.6%. According to our research of Wisconsin and other state lists there was 1 registered sex offender living in Radisson, Wisconsin as of March 29, 2017. The ratio of number of residents in Radisson to the number of sex offenders is 519 to 1. The number of registered sex offenders compared to the number of residents in this city is smaller than the state average. Nearest city with pop. 50,000+: Eau Claire, WI (67.3 miles , pop. 61,704).
Then by calculating average speed you actually calculate the slope of the distance time graph. that allows you to figure out distance travelled in a certain time. This only works when the accelleration is constant. then the average speed has the same value as the slope of the distance time graph.
What about the average speed according to definition 1? In this case, the distance traveled is 1000 meter so that the average speed would be (1000 m)/(50 s) = 20 m/s. This is what the speedometer would read. According to definition number 2, the average speed is the magnitude of the average velocity. Since the average velocity is zero (vector) m/s, the magnitude of this is also zero meters per second. If you want the instantaneous speed according to the definition 2, that would also be 20 m/s.