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

Question

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## Answers ( )

Answer: x-interceptStep-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.