So we need to find factors that can convert these

units into the ones that we want.

And so let's start with the time units.

We wanna convert from hours to seconds, and so we'll start by writing a factor,

which can cancel out the units of hours here, and give us something shorter.

And I don't remember in my head how many seconds there are in an hour.

So, I'll write it out.

Do this in two stages that there are 60 minutes in an hour.

And so, now we can cancel the units of hours here, and

that's the first step in our factor label method.

Now, because an hour equals 60 minutes,

if you take a quantity, which is the same on the top and

the bottom of a fraction, then that quotient is equal to one.

So by multiplying our original information, which is 100 kilometers per

hour, by this conversion factor, we're just multiplying by one.

And so we're not actually changing the value at all.

We're changing the units, and so that changes the numbers but

the actual quantity stays the same.

So the next factor will be from minutes to seconds.

There 60 seconds equals one minute.