like the single unit conversion, this one has the added step the you must make in order to accumulate the right answer. Sometimes the two step conversions can be confusing; a good way to keep track of all your steps is to make a map. For example:
cm-> m-> km or km-> m-> cm
Most important! know your Conversion factors well! Mixing these up will always
get the wrong answer. Not even that, factors wouldn't be able to cancel out, therefore not even getting an answer. You might even multiply in the wrong places where they shouldn't.
Term of the day: Derived Quantity Conversions
When there more than one SI base unit in a single quantity. For example: 20m/s, 2.34dg/ms, or 10km/h
Trying out the two step conversion:
convert the rate 0.075s/km to m/h
maps: km->m & s->min->h
0.075s/km x 1000m/1km x 1min/60s x 1h/60min = 0.0208m/h
check below for more examples from the classroom:
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