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Mathematics 16 Online
OpenStudy (saifoo.khan):

@omnomnom

OpenStudy (saifoo.khan):

An arrow is shot straight up into the air at a speed of 98 m/sec. What is the maximum height reached by the arrow? You may neglect air friction. Select one: a. 98 meters b. 490 meters c. 980 meters d. 1,470 meters

OpenStudy (omnomnom):

Lol seriously?

OpenStudy (anonymous):

is this from the moon, pluto, saturn?

OpenStudy (saifoo.khan):

Mercury!

OpenStudy (omnomnom):

EARTH!

OpenStudy (omnomnom):

ITS earth

OpenStudy (anonymous):

sorry, i don't have the gravitational constant for mercury... :(

OpenStudy (anonymous):

come to think of it, i don't have it for those planets/moon i mentioned...

OpenStudy (saifoo.khan):

v^2 = u^2 + 2as. 0^2 = 98^2 + 2(-9.81)s

OpenStudy (omnomnom):

LOL :D

OpenStudy (saifoo.khan):

lol @dpaInc

OpenStudy (omnomnom):

and saifoo you just confused me further

OpenStudy (saifoo.khan):

Why so?

OpenStudy (saifoo.khan):

Where so?

OpenStudy (omnomnom):

idk the equation

OpenStudy (saifoo.khan):

Don't you know the formulas? D:

OpenStudy (omnomnom):

i do but what the hell did you write?

OpenStudy (saifoo.khan):

What's so difficult in this? v^2 = u^2 + 2as. 0^2 = 98^2 + 2(-9.81)s

OpenStudy (omnomnom):

okay \[V^2 = U^2 +2as\] whats the U for?

OpenStudy (saifoo.khan):

v = final speed u = initial speed

OpenStudy (omnomnom):

OMG couldnt you write Vi ??? and Vf??

OpenStudy (omnomnom):

And let me guess the S is for time?

OpenStudy (saifoo.khan):

s = distance. duhh.

OpenStudy (saifoo.khan):

And no. We study that here like that.

OpenStudy (omnomnom):

OMG use d for distance please

OpenStudy (saifoo.khan):

\[\Large \color{red} {V_i = V_f + 2ad}\]

OpenStudy (omnomnom):

thank you

OpenStudy (saifoo.khan):

where are my $50?

OpenStudy (omnomnom):

i cant give it to you cuz you didnt answer the question :P

OpenStudy (saifoo.khan):

i did already.

OpenStudy (omnomnom):

but whats the answer? like is it a, b, c, d?

OpenStudy (saifoo.khan):

``` solve for d to find out the answer. :p

OpenStudy (omnomnom):

then make the equation less complicated

OpenStudy (saifoo.khan):

It's already less complicated.

OpenStudy (omnomnom):

NO it isnt you know where vi is?? Make d there and then i can answer it :D

OpenStudy (saifoo.khan):

|dw:1349397224874:dw|

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