How do you convert 90km.h in to m.s?

To convert 90 km/h to m/s, you can use the conversion factor that 1 km equals 1,000 meters and 1 hour equals 3,600 seconds. First, divide 90 by 3.6 (since 1 hour = 3,600 seconds). Thus, 90 km/h is equal to 90 ÷ 3.6 = 25 m/s.