Final answer:
The assertion that the Coefficient of Friction is always less than or equal to one is false. Coefficients of friction can sometimes exceed one, depending on the materials involved and their conditions. The coefficients of kinetic friction are typically less than static friction values, and these are approximate values given to one or two significant figures.
Step-by-step explanation:
The statement that the Coefficient of Friction is always less than or equal to one is false. Although commonly the coefficient of friction values are less than one, there are situations where this value can exceed one. For example, rubber on rubber can have a coefficient of friction greater than one. The coefficient of friction represents the ratio of the force of friction between two bodies and the force pressing them together. It is indicative of the roughness and the characteristics of the contact surfaces. When looking at the coefficients in a table like Table 5.1, it is true that the coefficients of kinetic friction are usually stated to be less than their static counterparts, and the values are given to only one or two digits to indicate the approximate nature of these values.
In applications involving calculations of the frictional force, it's important to account for the possibility that the coefficient of friction may sometimes be greater than one, although in many practical situations it is less than one. As such, while the coefficients of kinetic friction are indeed less than the static values, the assertion related to the coefficient always being less than or equal to one is incorrect.