The problem asks for the average speed of an athlete who runs 100 meters in 10 seconds, expressed in kilometers per hour (km/h).

1. Problem Description

The problem asks for the average speed of an athlete who runs 100 meters in 10 seconds, expressed in kilometers per hour (km/h).

2. Solution Steps

First, calculate the average speed in meters per second (m/s):

$average \ speed = \frac{distance}{time}$

$average \ speed = \frac{100 \ m}{10 \ s} = 10 \ m/s$

Now, convert the average speed from m/s to km/h. To do this, multiply by $\frac{3.6 \ km/h}{1 \ m/s}$:

$10 \ m/s \times \frac{3.6 \ km/h}{1 \ m/s} = 36 \ km/h$

3. Final Answer

The average speed is 36 km/h. The answer is e)

3

6.