Inactive Tutor answered 01/27/23
Tutor
New to Wyzant
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.
Inactive Tutor
A version of this question at Chegg.Com shows the graph of v(t) as piecewise linear.01/27/23