What is instantaneous acceleration?
a. acceleration in a straight line
b. acceleration that happens very quickly
c. acceleration over a long period of time
d. acceleration at a specific moment in time

D. acceleration at a specific moment in time

Explanation:

The acceleration of a body is defined as the change in velocity of the body in the given time.

If a body has initial velocity 'u' and final velocity 'v' over a time interval 't', then the acceleration of the body is given by the relation,

                                a = v -u / t

Consider a body travel from time ' t = o' to ' t = n'. In such cases, the acceleration of the body is given by average acceleration, which is the change in velocity of the body in that particular interval of time.

                          Aₐ = ΔV / Δt

But at each instant of time from t = 0 to n, the object experience different velocity. Therefore, the acceleration of the body at specific time, t₁, t₂, t₃, etc. is given by,

This is the instantaneous acceleration at the particular instant of time.