Ix In the equation for Newton's 2nd Law of Motion, F=ma "a" represents __ A area B acceleration C atomic number

## Step 1<br />The problem refers to Newton's Second Law of Motion, which is a fundamental principle in physics. The law states that the force acting on an object is equal to the mass of that object multiplied by its acceleration. This is mathematically represented as \(F = ma\), where \(F\) is the force, \(m\) is the mass, and \(a\) is the acceleration.<br /><br />## Step 2<br />In this equation, the variable 'a' represents acceleration. Acceleration is a measure of how quickly an object changes its velocity. It is a vector quantity, meaning it has both magnitude and direction.<br /><br />## Step 3<br />The other options provided, 'area' and 'atomic number', are not correct. 'Area' is a measure of the space enclosed by a shape, and 'atomic number' is a term used in chemistry to denote the number of protons in an atom's nucleus. Neither of these terms is represented by 'a' in the equation for Newton's Second Law of Motion.