Answer
(a) 0.6215
(b) 3.281
(c) 0.2778
Work Step by Step
(a) $1 ~\frac{km}{h} = (1 \frac{km}{h})(\frac{1 ~mi}{1.609 ~km}) = 0.6215$ miles per hour
(b) $1 ~m/s = (1 ~m/s)(\frac{1 ~ft}{0.3048 ~m}) = 3.281 ~ft/s$
(c) $1 ~\frac{km}{h} = (1 \frac{km}{h})(\frac{1000 ~m}{1 ~km})(\frac{1 ~h}{3600 ~s}) = \frac{5}{18} ~\frac{m}{s} = 0.2778 ~\frac{m}{s}$
