A projectile is launched from the ground with an initial vel...

Question Analysis
This problem assesses the application of the quadratic formula to a real-world scenario involving projectile motion.

Key Concept Explanation
The quadratic formula is used to find the roots of a quadratic equation of the form ( ), where the solutions are given by .

Step-by-step Solution
Set to find when the projectile hits the ground:
Identify a, b, and c from the equation:
Rewriting in standard form , we have: , , .
Calculate the discriminant:
Substitute into the quadratic formula:

Algebra-2

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