Question

If a sprinter runner a distance of 100metres in 9.83 seconds, calculate his average speed in km/hr?

Answer 1

$average \: speed = \frac{total \: distance}{total \: time } \\ = \frac{100}{9.83} = \frac{100 \times 100}{983} \\ = \frac{10000}{983} \\ = 10.1729....$
So, average speed is 10.17 m/s.