Labels:text | screenshot | font OCR: Here the analysis of motion continues with a classic problem drawn from the physics of the ancient Greeks. This is also a continuation of Leonardo's discussion about the way that objects move through the air, on the facing page (8r). The question is whether air rushing into the vacuum created in the wake of a projectile pushes the projectile along its course. This concept of force was presented in Aristotle's Physics. Leonardo intends to reject Aristotle's theory that the cause of the motion is in the medium: "Let it be proved
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