Emerging briefly from the depths of my maths phobia, I permitted myself a couple of thoughts.

I found this. Acceleration is the time rate of change of velocity, not just change in velocity. This means that a does not equal dv. It means that a = dv/dt.

And thought: If v = l/t, then, in the equation a = dv/dt time occurs twice; on both occasions as t^-1. Is my thinking right?
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There never was nothing.