________ refers to the ability to exert force against external objects.
These abilities are required for doing successfully less skilled and more standardized jobs. Physical abilities are required to do tasks that demand stamina, strength and similar characteristics. The various physical abilities are: 1. Dynamic strength: Ability to exert muscular force continuously overtime. 2. Trunk strength: Ability to exert muscular using trunk muscles. 3. Static strength: Ability to exert force against external objects. 4. Explosive strength: Ability to expand a maximum of energy in one or a series of explosive acts. 5. Extent flexibility: Ability to move the trunk and back muscles as far as possible.