Question

Please help I dont understand this question at all! I will give medal and fan

Answer 1

@YanaSidlinskiy @Conqueror @ganeshie8 @paki @Compassionate @pgpilot326

Answer 2

what is the quition

Answer 3

so, for part A, what info do you have?

Answer 4

I dont have one

Answer 5

than what do you need help with

Answer 6

what is a quition?

Answer 7

@geekfromthefutur did you read the problem?

Answer 8

A: H(t) = -16t2 + vt + s

Answer 9

yikes thats a hard one

Answer 10

@pgpilot326

Answer 11

Ok ty

Answer 12

dude, what info are they giving you in part A?

Answer 13

The height of the projectile and the feet of it

Answer 14

the initial height and the initial velocity (speed). what variables represent these quantities in your equation?

Answer 15

H and T

Answer 16

wow, really? read the first paragraph again.

Answer 17

let's identify what all of the variables are and what they represent.

H(t) is what? What are its units?
t is what? What are its units?
s is what? What are its units?
v is what? What are its units?

Answer 18

not intentional... just surprised.
and @YanaSidlinskiy , that is NOT part A. please don't just give out answers anyways... read the code of conduct.

Answer 19

and part B is wrong too

Answer 20

wow... i'm not putting people down. and i'm doing my best to help.

Answer 21

@geekfromthefutur , what did you figure out on the variables?

Answer 22

you there?

Answer 23

s shows the height

Answer 24

H (t), in feet

Answer 25

s is the initial height, in feet.
H(t) is the height after t seconds, in feet.

what about t and v?

Answer 26

t seconds v feet per second

Answer 27

t is time, in seconds and v is initial velocity, in feet per second.

very good!

so look at the original equation. what is it?

Answer 28

The projectile was launched from a height of 90 feet with an initial velocity of 50 feet per second.

Answer 29

I mean wrong thing

Answer 30

H(t) = -16t2 + vt + s

Answer 31

\(H(t) = -16t^2+vt+s\) and from part A we have what you wrote. very good.

now we want to identify what we actaully get from part A in terms of the variables and then substitute that into the origianl equation.

So can you do that?

Answer 32

"actually" not actaully

Answer 33

@geekfromthefutur what is the 90 feet in part A?

Answer 34

H(t)=-16t^2+60t+100

Answer 35

ummm and the 60 and 100 came from...?

Answer 36

i'm trying to help you... please don't waste my time with bs. if you don't know something, say so. do you want me to give you minimal effort? you get what you give!

Answer 37

Please

Answer 38

?

Answer 39

I think ik it but I may get it wrong

Answer 40

it's okay to make mistakes but just give it your best effort. if you do make a mistake, i'll help and show you the correct way. mistakes are just wonderful opportunities to learn.

Answer 41

Ok thx

Answer 42

so what is the 90 feet in part A?

Answer 43

sorry, but i don't have much time... please respond in a timely fashion.

Answer 44

Ok

Answer 45

H(t)

Answer 46

well, if it is, then what is t? in other words, at what time is H(t) = 90 feet?

Answer 47

Yes

Answer 48

?

Answer 49

t seconds

Answer 50

no, 90 feet is the height of the projectile when it is launched. it's the initial height. the time is t = 0 seconds.

so s = 90 feet.

what about the 50 feet per second? what is that?