The equation for a projectile's height versus time is. A tennis ball machine serves a ball vertically into the air from a height of two feet, with an initial speed of 120 feet per second. After how many seconds does the ball attain its maximum height?
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Home » Mathematics » The equation for a projectile's height versus time is. A tennis ball machine serves a ball vertically into the air from a height of two feet, with an initial speed of 120 feet per second.