Try a word Problem.
Marco hits a golf ball into the air from the third level of a
driving range that is 48 ft high. The function
h(t) = – 16t2 + 32t + 48 gives the height, h, in feet,
of the golf ball t seconds after it is hit into the air. When
will the ball hit the ground?
Hint: The ball hits the ground when the height = 0.