Impetus of a moving body and motion against friction
Small motions sustained by impetus; a slow mover and a rubbing load
Two propositions on motion, written in red chalk. Leonardo states that every small motion made by a moving body surrounded by air is sustained by the impetus, and that a body moved by a slow mover, if it must move a thing held by friction, does not move except together with its mover. The page bears only these lines in mirror-writing.
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Small motion maintained by impetus
Every small motion made by a moving body surrounded by air keeps itself going by means of the impetus.
A slow mover and a load held by friction
A moving body driven by a slow mover, if it has to move a thing held by friction, does not move except together with its mover.