Answer:
2502 cm/s
Explanation:
In conversions from one unit to another,we always use a conversion factor. A conversion factor is a number used to change one set of units to another, by multiplying or dividing. The conversion factor in changing km/hr to cm/s is:
1 km/hr = 27.8 cm/s.
Hence 90 km/hr = 90 * 27.8 = 2502 cm/s
