Question

Can anyone please help me answer this question?

An object moving in a straight line has a velocity v in m/s that varies with time t in s according to the following function.
v = 8 + 2.5 t2

11. The instantaneous acceleration of the object at t = 2 s is
(A) 2 m/s2 (B) 4 m/s2 (C) 6 m/s2 (D) 8 m/s2 (E) 10 m/s2

12. The displacement of the object between t = 0 and t = 6 s is
(A) 120 m (B) 180 m (C) 228 m (D) 242 m (E) 260 m
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Answer 1

Just remember sva
s displacement
v velocity
a acceleration
S to V differentiate
V to A differentiate
A to V integrate
V to S integrate
If the question ask to find displacement, find the turning point
For this question the turning point is undefined