how to calculate acceleration?

Prof. Tsai;

I got problem in calculating the acceleration.

I know how to obtain  velocity within certain line (eg. dot 1 to dot 2; dot 2 to dot 3)

Since we have the x position and the time stamp (time onset, not the fixation duration, right?).

From the physics I know if I need to obtain acceleration, I need to differentiate △v by △T

But the question is:

what is the △T here? Is it the one obtained from the first delta T ?

I got a diagram for you.

Noted,

Howard

--

吳浩民 Howard Wu

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