Aime F. answered • 01/27/23
Tutor
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PhD in Physics (Yale), have taught Methods of Engineering Analysis
Acceleration is d²x/dt².
Average acceleration over a < t < c is
(c – a)⁻¹ ∫ₐᶜ(d²x/dt²)dt = (c – a)⁻¹(v(c) – v(a)) by the Fundamental Theorem of Calculus, where the velocity function v(t) = dx/dt can presumably be obtained from the graph that was not provided here.
Aime F.
A version of this question at Chegg.Com shows the graph of v(t) as piecewise linear.01/27/23