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Mathematics 20 Online
OpenStudy (anonymous):

A firecracker shoots up from a hill 150 feet high with an initial speed of 95 feet per second. Using the formula H(t) = −16t2 + vt + s, determine how long it will take the firecracker to hit the ground.

OpenStudy (nottim):

1. Let's draw a diagram. 2. LEt's make a variables list 3 Find der formulas tu need!

OpenStudy (nottim):

4. Solve it! remember which formulas need to be 'combined'!

OpenStudy (anonymous):

Do you just want the answer?

OpenStudy (nottim):

blue bird! go back to your other question! THIS MA TOWN!

OpenStudy (nottim):

oooh wait. this aint physics...

OpenStudy (anonymous):

How would i make a variables list?

OpenStudy (nottim):

you just need to find the end points!

OpenStudy (anonymous):

I'm confused :o

OpenStudy (anonymous):

I thought you only plug in the numbers to the equation but i'm unsure if that's correct or how to do it even if it is correct

OpenStudy (nottim):

v=95 ft/s H(t)=150

OpenStudy (nottim):

solve for s!

OpenStudy (nottim):

wait...what's s? solve for t, silly me

OpenStudy (anonymous):

ok but there is also a s!?

OpenStudy (anonymous):

I tried to solve but i'm soooo confused

OpenStudy (lgbasallote):

let H(t) = 0 then solve for t

OpenStudy (nottim):

really? shoot. I suck at even trinomials now huh

OpenStudy (nottim):

maybe s is given elsewhere in your textbook

OpenStudy (anonymous):

no it isn't :o

OpenStudy (anonymous):

@Romero yes please can i have the answer

OpenStudy (nottim):

@lgbasallote wat is s?

OpenStudy (lgbasallote):

i'd like to say it's the distance traveled

OpenStudy (anonymous):

Is the answer 7.2 seconds?

OpenStudy (nottim):

dunno. doesnt your txtbook ahve the answer?

OpenStudy (anonymous):

no @lgbasallote is the answe 7.2s ?!

OpenStudy (anonymous):

i'm doing an online course not from a textbook!

OpenStudy (lgbasallote):

lol shouldnt @NotTim be answering this o.O wait..ill check

OpenStudy (nottim):

i dont wanna do math...

OpenStudy (lgbasallote):

it;s what my calculator said

OpenStudy (anonymous):

ok thank you all :)

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