Carl Lewis, a sprinter in the 1988 Olympic Games, ran the 100.0-m dash in 9.92 s. What was his speed in feet per second (ft/s) ?

Speed, S of Carl Lewis is 33.074ft/s.

Explanation:

Given the following data;

Distance, d = 100m

Time, t = 9.92secs

Speed =?

Speed can be defined as the rate of change in distance with time. Speed is a scalar quantity and as such it has only magnitude but no direction.

Mathematically, speed is given by the equation;

Substituting into the above equation;

Speed, S= 10.081m/s

Now to convert to feet (ft);

We know that 1 metre (m) = 3.28084 feet (ft).

Therefore, 10.081m/s = 10.081 * 3.28084ft/s

This is equal to 33.074ft/s.

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