The Height of a Projectile Fired Vertically into the Air $-$

question 28

Multiple Choice

The height of a projectile fired vertically into the air (neglecting air resistance) at an initial velocity of 144 feet per second is a function of the time and is given by the equation f ( x ) = 144 x $-$ 16 x 2 , where x represents the time. Find the highest point reached by the projectile.

• A) 144 feet
• B) 324 feet
• C) 648 feet

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