Question

If a car is traveling at 12 meters per second, at how many kilometers per hour (kph) is it traveling?

Answer 1

43.2 kphs Per hour because there are 3600 seconds and in hour and 12 meters is equal to 0.012 and 0.012 times 3600 is 43.2

Answer 2

Set up multiplication/division to cancel out units that you do not need for your final answer and introduce units that you do.

You want your answer in the form km/hr and you are starting with m/s so:

(12m/s)(km/1000m)(60s/min)(60min/hr)=43.2km/hr

The car is traveling at 43.2 kilometers per hour.