Question

A British researcher, developed a formula to determine walking or running speed based on hip height and stride length. The formula is: s =0.78l ^1.67 / h ^ 1.17 , where s is speed, in meters per second, l is stride length, in meters, and h is the individuals hip height, in meters. Calculate the walking speed of an individual whose hip height is 0.93 meters and their stride length is 1.25 meters.

Answer 1

1.23 meters

Step-by-step explanation:

The following formula

`s=(0.78l^(1.67))/(h^(1.17))`

gives the stride length when the hip height of the person is h and the stride length is l.

In our case, we are told that l = 1.25 m and h = 0.93 m; therefore, the stride length will be found by substituting these values into the formula. This gives

`s=(0.78*1.25^(1.67))/(0.93^(1.17))`

which we evaluate (using a calculator) to get

`s=1.23\text{ m/s.}`

Hence, the walking speed is 1.23 per second meters.