Question

Calculate the speed of an airplane that moves 50 meters in one second in both cm/s and km/s

Answer 1

This question is simply conversions

we know there are 100 cm in a m so..
50 × 100 = 5,000 cm/s

and we know there are 1,000 m in a know so..
50 ÷ 1,000 = 50/1,000 = 1/20 km/s