The track star runs 100m at a rate of 10.4m/s. How long did it take to run 100m?

Time, t = 9.62 secs.

Explanation:

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the equation;

....equation 1

Making time the subject formula;

.....equation 2

Given the following data;

Distance = 100m

Speed = 10.4m/s

Substituting into equation 2;

Time, t = 9.62 secs.

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