Labels:text | screenshot | font OCR: Leonardo here analyzes rectilinear motion- that is, movement in a straight line-using the same vocabulary and geometry he applies to light's straight movement. In both cases, impetus mechanics is the lower physical science that provides a model of represen- tation to the higher, more abstract science: "There are three aspects of the movement that water makes on being reflected from its percussion within the water penetrated by it:' the first movement is toward the bed of the water; the second is toward the place where