A projectile is launched upward from a height of 704 feet with an initial velocity of 112 ft/s. The equation gives the height h after t seconds. find the number of seconds until it returns to the ground

Question

anonymous · Answer

h=-16t^2+112t+704

jdoe0001 · Answer

notice your equation, which you didn't post btw
is a negative parabola equation

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jdoe0001 · Answer

so, set y = 0, solve like you'd any other quadratic equation you've surely done many times by now