Question

An object is dropped from a height of 1700 ft above the ground. The function h=-16t^2+1700 gives the object's height h in feet during free fall at t seconds.
a. When will the object be 1000 ft above the ground?
b. When will the object be 940 ft above the ground?
c. What are a reasonable domain and range for the function h?

a. I have about 6.61 seconds
b. I have about 6.89 seconds
c. I have no answer yet.....

Answer 1

Your asnwer for a is correct.

Answer 2

And so is the asnwer to B...

Answer 3

okay.....so for c, do I plug in 0 for t and then solve for h? something like that?

Answer 4

well the domain and range have to be positive...

Answer 5

Becasue the height can't go negative and neither can the time...

Answer 6

Okay. I get it now...so do I just solve:
16t^2=1700?

Answer 7

Well the answer would just be domain is all postitive numbers and so is the range..

Answer 8

Object is dropped from height h = 1700 ft. and eventually it will touch the ground (h = 0 feet). Range is: [0, 1700]

Answer 9

I got the same question.

Answer 10

Oh yeah... oops

Answer 11

Thanks for the catch..

Answer 12

I can still guide you.

Answer 13

This is just confusing especially right now....:/ Are you in Algebra 2A confluxepic?

Answer 14

And in that case domain is until y reaches 0

Answer 15

Algebra 2A Honors.

Answer 16

me too!!!!

Answer 17

so did you have the portfolio due today?

Answer 18

I am ahead by a week.

Answer 19

oh :(

Answer 20

I did have a portfolio due today but I already did it before.

Answer 21

So domain is from 0 to 10.31

Answer 22

Okay

Answer 23

so do I do what I put as the equation?

Answer 24

Domain: \(0 \le t \le 10.31\) or [0, 10.31]
Range: \(0 \le h \le 1700\) or [0, 1700]

Answer 25

okay....thanks!

Answer 26

yw.

Answer 27

@confluxepic did you get #59? if so, how did you find how high in the air the ball goes?

Answer 28

What chapter and lesson? @haleyelizabeth2017

Answer 29

I ended up figuring it out :/

Answer 30

thank you though @confluxepic!