Eli5: Why does light travel so fast?
In: 130
You know the equation Force = mass x acceleration? That can be rearranged into Force / mass = acceleration.
Light has zero mass, so to find it’s acceleration we would have to calculate the forces acting on it divided by zero.
(Force / 0 = acceleration)
Theoretically, anything divided by zero is infinity. That means any force applied to light would immediately give it infinite acceleration, and therefore infinite speed.
(Any number / 0 = infinity)
But the universe puts it’s own speed limit on every object in existence for some reason (including light particles) so it caps at 300,000 km/s.
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