One car moves at a speed of 72 km / h and the second 25 m / s, which car has a higher speed?

To determine the speed of which car is more, you need to convert them into one unit of measurement (two methods): 1) 72 km / h = 72,000 m / 60 min = 1200 m / min = 1200 m / 60 sec = 20 m / sec 20 m / sec <25 m / sec – the speed of the second car is higher. Or 2) 25 m / s = 0.025 km / s = 0.025 km / (1/60) min = 1.5 km / min = 1.5 km / (1/60) h = 90 km / h 72 km / h <90 km / h.