When using quadratics to model parabolic motion, which value represents the time at which the object falls to the ground? x-intercept y-intercept axis of symmetry vertex

Answer: x-intercept

Step-by-step explanation:

NOTES

1) Parabolic motion is represented by the equation:

h (t) = - 9.8t² + vt + h (in meters per second²), v is velocity

or

h (t) = - 32t² + vt + h (in feet per second²), v is velocity

2) The x-axis is time (in seconds) & the y-axis is height (in meters or feet).

Since you want to know what time the object hit the ground, h = 0

Therefore, you are looking for the zero of the equation, which is on the x-axis, thus is the x-intercept.