solve using quadratic formula

Question

A stone is thrown upward at a velocity of 32 ft./s from a mountain 240 feet high when will the stone hit the ground

Answer 1

y = (1/2)at^2 + vt + h

a = -32, v = 32, and h = 240

 

To use the Quadratic Formula, use v for b and h for c. a will be -16 (-32/2).

You'll get two solutions, use the one where t is positive.