Question

Which equation would best help solve the following problem:



Brett kicks a field goal with an initial vertical velocity of 42 meters per second. How long will it take the football to hit the ground?


–4.9t^2 – 42t = 0


–16t^2+ 42t = 0


–4.9t^2 + 42t = 0


16t^2 + 42t = 0

Answer 1

C

Answer 2

No it's b

Answer 3

guys

Answer 4

i need truth

Answer 5

It's definetely b

Answer 6

Daniel 56k answered 2 of my questions earlier and they were wrong don't listen to him

Answer 7

how do u know its b

Answer 8

i am sure it was option 'c' is right.

Answer 9

Because I looked it up and did research

Answer 10

yeah i think it is c too

Answer 11

Lies

Answer 12

You'll thank me later rootbeer

Answer 13

dude @Edude23 chill

Answer 14

Think about it. How fast is gravity when related to time? What about when it is related to displacement? Also think about the football's initial velocity. Is it in the same direction as gravity, or opposite?

Answer 15

need the right answer

Answer 16

i can show you,
it is simple 2d-motion question,
use equation\[s=ut+(1/2)at ^{2}\]there distance covered 's' is 0, u is initial velocity, a is gravitational accelration, (take negative, i.e. -g), and you will got your answer.

Answer 17

Which equation would best help solve the following problem:



DeSean throws a ball up with an initial vertical velocity of 30 feet per second from a platform that is at ground level. How long will the ball be in the air?


16t^2 + 30t = 0

–16t^2+ 30t = 0


–16t^2 – 30t = 0


–4.9t^2 – 30t = 0

Answer 18

what about this?

Answer 19

It's either a b c or d or nah

Answer 20

edude get off my questions

Answer 21

that was uncalled for

Answer 22

i believe it is B

Answer 23

Yes sir

Answer 24

same

Answer 25

I'm sorry I bothered you

Answer 26

you were just being rude chill bro

Answer 27

Alright

Answer 28

Martina hits a volleyball ball upward with an initial velocity of 13 meters/sec. When she hits the ball, it is one meter above the ground. How long will it take the ball to hit the ground?


–4.9t^2 + 13t + 1 = 0

–4.9t^2 + 13t = 1


4.9t^2 + 13t + 1 = 0


–16t^2+ 13t + 1 = 0

Answer 29

and this??

Answer 30

I'm sorry I bothered you

Answer 31

Yes sir

Answer 32

i think d

Answer 33

anything elese rootbeer

Answer 34

ty gurl

Answer 35

welcome any time!

Answer 36

i think it is...

Answer 37

definitely not D!!

Answer 38

yea that was wrong LOLOLO

Answer 39

BUT THE REST WERE RIGHT

Answer 40

D would be for the measure in feet not meters

Answer 41

sorry i was not positive i was baseing it of the first 1 lol

Answer 42

its all good