No, the equation you mentioned is not accurate. The total energy of an object is given by the famous equation derived by Albert Einstein, known as the mass-energy equivalence principle or the Einstein's mass-energy equivalence equation:
E = mc²
In this equation, E represents the total energy of the object, m is its rest mass (also known as invariant mass), and c is the speed of light in a vacuum. The equation states that the energy (E) of an object is equal to its mass (m) multiplied by the square of the speed of light (c²).
The equation indicates that mass and energy are interchangeable and that a small amount of mass can be converted into a significant amount of energy. This principle forms the basis of concepts such as nuclear energy and the famous equation E=mc² is a cornerstone of Einstein's theory of relativity.