The equation you are referring to is Einstein's famous mass-energy equivalence equation:
E = mc^2
In this equation, "E" represents energy, "m" represents mass, and "c" represents the speed of light in a vacuum.
The equation does not imply that an object can attain a speed greater than the speed of light. The square of the speed of light, c^2, is a constant that appears in the equation because it is a fundamental part of the relationship between mass and energy.
The equation arises from Einstein's theory of special relativity, which shows that energy and mass are intimately related. It demonstrates that mass can be converted into energy and vice versa. The equation indicates that even a small amount of mass can correspond to a significant amount of energy.
The square of the speed of light, c^2, is multiplied by the mass to convert it into energy units. It is a mathematical factor that ensures the units on both sides of the equation are consistent. Since energy has units of mass times the square of velocity (kg·m^2/s^2), multiplying mass by c^2 ensures that the resulting energy has the correct units.
In summary, the square of the speed of light in the mass-energy equivalence equation is not related to the concept of exceeding the speed of light. It is simply a mathematical factor that allows for the proper conversion between mass and energy.