#### Answer

393.6 feet

#### Work Step by Step

Given, the fastest nerve signals in the human body travel 120 meters per second.
To find how many feet per second do the signals travel.
We’re changing from a metric length unit to a U.S. length unit. In the “Metric to U.S. Units” side of the table, you see that 1 meter = 3.28 feet. Two unit fractions can be written using that information.(1 m)/(3.28 feet) Or(3.28 feet)/(1 m).
Multiply by the unit fraction that allows you to divide out meters (that is, meters is in the denominator).
120 m * (3.28 feet)/(1 m) = 393.6 feet