It is diffraction
Explanation:
The opening is the aperture
Acceleration = Change in Velocity / time
a = (v - u) / t
Where v = final velocity in m/s
u = initial velocity in m/s
t = time in seconds.
a = acceleration in m/s²
A proper record of the changes in velocity with the corresponding time would help find the acceleration.
Everything is in the universe.
That's what the word means.
It would be best to cover the cardiac, smooth, and skeletal muscles! =)