a toy rocket is fired from the ground with an upward velocity of 200 feet per second. How many seconds will the rocket take to return to the ground?

Question

freckles · Answer

can you give the equation for the position of the rocket

anonymous · Answer

h=-16t^2 +v0t+h0, where h is the final height in feet, t is the time of travel in seconds,v0 is the initial velocity in feet per second,and h0 is the initial height in feet of an object traveling upward

freckles · Answer

stupid question 
upward velocity means not initial right?
and if not, what is the relationship between upward and initial velocity?
or what does upward velocity mean exactly?

freckles · Answer

@ganeshie8 can you tell me what upward velocity means exactly?

anonymous · Answer

it does not specify all i am given is the question and the formula

freckles · Answer

and pretty please :)

ganeshie8 · Answer

yes its same as the initial velocity before leaving the ground

freckles · Answer

oh that makes this easier for me to read 
thank you so much

freckles · Answer

well we know the rocket started with initial height 0 so we know h0 is 0

freckles · Answer

$$h=-16t^2+200t$$

freckles · Answer

we want to know when h is zero again

freckles · Answer

besides at t=0

freckles · Answer

0=-16t^2+200t 
solve for t

anonymous · Answer

thank you and one more question if you could?

freckles · Answer

post

anonymous · Answer

(a-1)(a+4)=14
p.s I'm really bad at math:(

freckles · Answer

you will have to make it ugly before you make it pretty

freckles · Answer

you need everything on one side

freckles · Answer

and multiply the (a-1)(a+4)
and then combine like terms

freckles · Answer

$$(a-1)(a+4)=14 \ \text{ subtract 14 on both sides } \ (a-1)(a+4)-14=0 \ \text{ multiply the } (a-1)(1+4)  \text{ then subtract the 14 there }$$

anonymous · Answer

thank you so much :)

freckles · Answer

np :)

freckles · Answer

like if you still need help on solving it let me know

freckles · Answer

i will be here for a few more minutes

anonymous · Answer

I'm done for tonight but thanks for all your help

freckles · Answer

np :)
gave a good night

freckles · Answer

have*

anonymous · Answer

thanks, if you need help in english i can help lol thats my best subject

freckles · Answer

i feel like you are making fun of my english a little bit :p
just kidding

anonymous · Answer

you can make fun of my math :)

freckles · Answer

i might

anonymous · Answer

:) night