# Simple units conversion (km/h -> m/s)

#### oggfile

So the problem is:

Convert 35 km/h to in m/s.

I know that:

- 1 km = 10^3 m
- 1 h = 60 s

So I do:

35 km/h (10^3 m/1 km) (1 h/60 s) = 583 m/s

But the answer is 9.7 -- What??

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#### stewartcs

Science Advisor
So the problem is:

Convert 35 km/h to in m/s.

I know that:

- 1 km = 10^3 m
- 1 h = 60 s

So I do:

35 km/h (10^3 m/1 km) (1 h/60 s) = 583 m/s

But the answer is 9.7 -- What??
$$\frac{35km}{h} \cdot \frac{1000m}{1km} \cdot \frac{1h}{3600s}$$

There are more seconds in an hour than 60!

Hope this helps.

CS

#### oggfile

$$\frac{35km}{h} \cdot \frac{1000m}{1km} \cdot \frac{1h}{3600s}$$

There are more seconds in an hour than 60!

Hope this helps.

CS
Wow, that was dumb of me. Seriously, I could simply NOT figure this out. Thanks a lot!

#### stewartcs

Science Advisor
Wow, that was dumb of me. Seriously, I could simply NOT figure this out. Thanks a lot!
Honest mistake...happens to everyone sometimes.

CS

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