Answer:
First of all,there is not theory F=ma^2!!
Its F=ma and they are definitely not the same.Here F means force and E means Energy.
a means acceleration, but c means the velocity of light. Clearly there's difference between acceleration and velocity and force and energy.
F=ma can be applied on things we normally see but E=mc^2 is applied on things that can travel nearly in light speed!which means atoms,molecules, protons,electrons etc. energy can be determined by the Einstein theory but F=ma is for determining human energy, or energy of cars,vehicles or any regular moving things
Explanation: