1. Let's clarify the problem first. "With laws please" is ambiguous; I will assume you want an explanation of a law in math or physics with steps. 2. For example, consider Newton's Second Law of Motion: it states that the force $F$ acting on an object is equal to the mass $m$ of the object times its acceleration $a$. 3. We express this mathematically as $$F = ma$$. 4. Step 1: Identify mass $m$ and acceleration $a$. 5. Step 2: Multiply them to calculate the force. 6. Step 3: Unit of force is newtons (N), where $$1\ N = 1\ kg \cdot m/s^2$$. 7. Example: If $m = 5$ and $a = 2$, then $$F = 5 \times 2 = 10$$ newtons. 8. Therefore, the law relates force, mass, and acceleration in a simple formula usable for many physics problems.