- #1

dboice95

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## Homework Statement

How much work per step per leg in the race? How much work must he (single leg) squat to equate 1 step of work in the race?

The given variables are:

Displacement: 100 meters

Time: 9.65 seconds

runners weight in kg= ?

100 steps to complete 100m race, alternating legs.

## Homework Equations

Force= Mass x Acceleration

Work = Force x Displacement

Acceleration = change in velocity/ change in time

velocity = displacement/ time

acceleration due to gravity = 9.81 m/s[/B]

## The Attempt at a Solution

The problem was for usian bolt. so I google usain bolts mass in kg to be 94.

I calculated force per leg to be 94 x 9.81 = 922.14N

I then calculated work to be 922.14N x 1 (one step for one meter) = 922.14 JI'm not sure if any of this is correct or where to go from here. Can anyone help out?[/B]