The formula to calculate the sectional density is:
\[ SD = \frac{M}{A} \]
Where:
A sectional density is defined as the ratio of an object, typically a projectile or bullet, and the cross-sectional area of the given axis. This is a mass per unit area while typical density is a mass per unit volume. Sectional density is an important factor in ballistics as it affects the penetration capability of a projectile.
Let's assume the following values:
Using the formula to calculate the sectional density:
\[ SD = \frac{10}{2} = 5 \text{ g/cm²} \]
The Sectional Density is 5 g/cm².