Question

what is the formula to convert km/h to m/s

Answer 1

1 km = 1000 m
1 hr = 60 minutes
And 1 minute = 60 seconds
So, 1 hr = $60\times 60$ = 3600 seconds
Then, 1 km/hr = $\frac{1000\mathrm{m}}{3600\mathrm{s}}=\frac{5}{18}\mathrm{m}/\mathrm{s}$
Therefore the formula to convert 1 km/hr to m/s is 1 km/hr = $\frac{5}{18}$ m/s