guttermanerin guttermanerin 10-02-2021 Physics contestada A person drives for 1.00 h at 10.0 km/h and 2.00 h at 20.0 km/h. What is their average speed, in SI units? A. 4.63 m/s B. 16.7 km/h C. 10.3 mph D. 16.7 m/s