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jaejoon89
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Homework Statement
A moving particle reaches its max. speed at the instant t = 3. (Before and after 3, its speed is less.) It follows that the particle's acceleration is 0 at the instant t = 3... Show that this is FALSE
Homework Equations
v = dR/dt
a = d^2 R / dt^2
The Attempt at a Solution
How do I show this is false? The derivative of velocity is acceleration so I would think it's true and is indeed 0. This is on a chapter for vector analysis on acceleration and curvature.