The human body typically operates in positions that are not very stable and we must constantly use our muscles to adjust our body position and counteract the tendency of our bodies to fall over. We commonly refer to this skill as balance. For the most part balance is subconscious, but watching a toddler who has just learned to walk will provide an accentuated idea of how much actual is required for humans to stay upright. Toddlers are especially unstable due to their disproportionately massive heads, and after this unit we will understand why that feature so greatly affects their .
A quantity representing the effect of applying a force to an object or system while it moves some distance.
a measure of the displacement from equilibrium an object can experience and still move back toward equilibrium