21.8k views
5 votes
Gianna is going to throw a ball from the top floor of her middle school. When she throws the ball from 48feet above the ground, the function h(t)=−16t2+32t+48 models the height, h, of the ball above the ground as a function of time, t. Find the zero of this function that tells us when the ball will hit the ground.

User Kolby
by
8.1k points

2 Answers

4 votes

Answer:

t=3 the ball hits the ground

Explanation:

To find the zero means we will equate the function to zero and then solve, that is

+ 32t + 48 = 0

by factorizing , we have

(t+1)(-16t+48) = 0

Therefore:

t = -1 or t = 3

since time can not be negative , then , t = 3 seconds

User Shahram Kalantari
by
8.0k points
3 votes

Answer:

T1 = 0

T2 = 2

Explanation:

0 is when the ball first went up

User John At TimeStored
by
8.2k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories