What is newton's second law of motion?

The Newton's second law states that the acceleration of an object is dependent upon two variables: the net force acting upon the object and the mass of the object. The acceleration of an objects depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased the acceleration of the object is increased. As the mass of an object is increased the acceleration of the object is decreased. 
Equation: F = m x a 

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.