90 Centimeters Per Second to Miles Per Hour = 2.0132: 4 Centimeters Per Second to Miles Per Hour = 0.0895: 100 Centimeters Per Second to Miles Per Hour = 2.2369: 5 Centimeters Per Second to Miles Per Hour = 0.1118: 200 Centimeters Per Second to Miles Per Hour = 4.4739: 6 Centimeters Per Second to Miles Per Hour = 0.1342