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Express your answer to two significant figures and include the appropriate unit

Express your answer to two significant figures and include the appropriate unit-example-1

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Chemistry => Measurements => Metric Unit Conversions

We have a velocity value equal to 56.8m/min. Remember that velocity is defined as the distance traveled in a given time.

Now, we are asked to find the time it will take to walk 7900ft.

So we must do a conversion of units, to go from feet to meters we will take into account the following relationship


1ft=0.3048m

So, the distance of 7900ft in meters will be:


m=7900ft*(0.3048m)/(1ft)=2408m

Now, the time that will take to cover this distance will be:


\begin{gathered} Velocity=(Distance)/(Time) \\ \\ Time=(Distance)/(Velocity) \\ \\ Time=(2408m)/(56.8m/min) \\ \\ Time=42.4min \end{gathered}

We have to express the answer with 2 significant figures.

It will take 42 minutes to cover a distance of 7900ft

Answer: 42 min

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