The speed of the moon is 4.32×10^-6 m/h, to pass it to km/s with the data that they give us, we have to do the following mathematical operation: (4.32×10^-6 m/h)*(1/1000 km/m)*(1/3600 h/s)=1.2x10^-12Km/s. The moon then moves 1.2x10^-12 km every second.NOTE: there is an error in the question, since 1h = 3600s.