Posted by **McKenna** on Wednesday, November 28, 2012 at 10:06pm.

how do you solve problems as such: if a person drops a water balloon off the rooftop of a 36 foot building, the height of the water balloon is give by the equation h=-16t^2+36, where t is in seconds. when will the water balloon hit the ground?

- precalculus -
**Reiny**, Wednesday, November 28, 2012 at 10:33pm
when it hits the ground, h = 0

-16t^2 + 36 = 0

t^2 = 36/16

t = 6/4 = 3/2 = 1.5

It will take 1.5 seconds

- precalculus -
**Josh**, Wednesday, November 28, 2012 at 10:34pm
Just plug in the height of 36 ft into the equation given for the height, then you can solve for t by subtracting 36, then dividing by 16, and square rooting your answer (make sure to take the positive square root).

## Answer this Question

## Related Questions

- Math - If a person throws a water balloon, the height (in feet) if the water ...
- Physics - 1)A student at a window on the second floor of a high school building ...
- physics - A water balloon is dropped from the top of a building. Assume the ...
- Physics - Hey, it's me again, Can someone help me with this question? A water ...
- physics =( - A person on a small, 7.00 meter high, hill aims a water-balloon ...
- Physics(pleaseee help!!) - You drop a water balloon on your friend’s head from ...
- physics - A water balloon is launched at a building 24m away with an initial ...
- Physics - A water balloon is thrown horizontally at a speed of 2.00 m/s from a ...
- Math - A water balloon is shot into the air so that its height h, in metres, ...
- physics - In a water balloon toss a contestant throws her balloon with a speed ...