## nicolek9 2 years ago i also do not understand 60 miles per hour to miles per second can you please explain too?

1. jtvatsim

To answer that, let's answer an easier question first... If you are going 60 miles per hour, how many miles per minute are you going?

2. nicolek9

oh thanks!

3. UnkleRhaukus

$1[\text {min}]=60[\text{sec}]\quad\implies\quad\frac1{60}\frac{[\text {min}]}{[\text{sec}]}=1$$1[\text {hr}]=60[\text{min}]\quad\implies\quad \frac{1}{60}\frac{[\text{hr}]}{[\text{min}]}=1$ $60 \frac{[\text{mi}]}{[\text{hr}]}=60 \frac{[\text{mi}]}{[\text{hr}]}\times1\times1$ $\qquad\qquad= 60 \frac{[\text{mi}]}{[\text{hr}]}\times\frac{1}{60}\frac{[\text{hr}]}{[\text{min}]}\times\frac1{60}\frac{[\text {min}]}{[\text{sec}]}$ $\qquad\qquad= \cancel{60} \frac{[\text{mi}]}{\cancel{[\text{hr}]}}\times\cancel{\frac{1}{60}}\frac{\cancel{[\text{hr}]}}{\cancel{\text{min}]}}\times\frac1{60}\frac{\cancel{[\text {min}]}}{[\text{sec}]}$ $\qquad\qquad=\frac1{60}\frac{[\text{mi}]}{[\text{sec}]}$

4. UnkleRhaukus

can you understand that ?

5. nicolek9

yes