Quadradic Equation Word Problems - Examples & Practice

When people go sky diving, they are in free fall. This means only the acceleration of gravity is controlling their movement until they release the parachute for a safe landing (at about $2{,}500\text{ft}$ above ground). The standard altitude to drop from is about $13{,}000\text{ft}$. $\\$ If a skydiver's fall is defined as $\Delta y= 16t^2$ where $\Delta y$ is how far a sky diver has fallen, how long $t$ is a typical sky dive (before releasing the parachute)? Round to the nearest hundredth second.