Four race cars are traveling on a 4.0 kilometer tri oval track. The four cars are traveling at constant speeds of 315 km/h, 305 km/h, 300 km/h, and 290 km/h, respectively. Assume you are an observer standing at a point on the track for a period of 30 minutes and are recording the instantaneous speed of each vehicle as it crosses your point. What is the time mean speed and space mean speed for these vehicles for this time period?

Four race cars are traveling on a 4.0 kilometer tri oval track. The four cars are traveling at constant speeds of 315 km/h, 305 km/h, 300 km/h, and 290 km/h, respectively. Assume you are an observer standing at a point on the track for a period of 30 minutes and are recording the instantaneous speed of each vehicle as it crosses your point. What is the time mean speed and space mean speed for these vehicles for this time period?