An object that is accelerating may be
a. slowing down.
b. gaining speed.
c. changing direction.
d. all of the above

The answer of this question is D. All of the above

Acceleration happen when an obeject change its velocity. It has nothing to do with speed.

The huge misconception about acceleration is when we thought it only aply if we increase our speed ( in a sport match, sportcaster often describe acceleration as an increase in players speed)

slower, faster, right , left, it does not matter, as long as that object change its velocity, it accelerates

The duration of a photographic flash is related to an rc time constantly