# can someone help me solve this
**URL:** https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961
**Category:** NYSpeed Off Topic
**Created:** [May 27, 2007, 1:21pm UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961 "2007-05-27T13:21:05Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@2slowtogofast](https://forums.speedlife.net/u/2slowtogofast)
#### Post date: [May 27, 2007, 1:21pm UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961/1 "2007-05-27T13:21:05Z")
A rock is thrown verticlly upward from the surface of the moon at a velocity of 12 meters/second and reaches a height of s = 12t - 0.8t^2(that is 0.8t squared i dont know how to type it so it look right) meters in t sec
A. find velocity and acceleration time
B. how long does it take the rock to reach its highest point
c how high does the rock go
d how long is the rock aloft
i got this wrong on my final exam could some take some time to explain it to me so maybe i can understand it better
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### Author:  [@Fry](https://forums.speedlife.net/u/Fry)
#### Post date: [May 27, 2007, 5:03pm UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961/2 "2007-05-27T17:03:45Z")
A.) As per the first equation and the word problem, your initial velocity is 12 m/s, and the acceleration due to the gravitational pull of the moon is -1.6m/s/s. (1/2at^2… 1/2 \* 1.6 \* t^2… 0.8t^2)
B.) Check the equation in the lower left. Vf = Vi + at… 0 = 12 + -1.6t… t=7.5s
C.) Check the lower right equation. d=(Vi + Vf)/2 _t… d=(12+0)/2_7.5=45m
D.) it took 7.5 seconds to go up. It’ll take 7.5 seconds to come back down. 15 seconds.
Amirite? :headbang:
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### Author:  [@2slowtogofast](https://forums.speedlife.net/u/2slowtogofast)
#### Post date: [May 27, 2007, 6:58pm UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961/3 "2007-05-27T18:58:13Z")
thanks i need to spend more time on this its hard to catch up when you behind
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### Author:  [@misteroman](https://forums.speedlife.net/u/misteroman)
#### Post date: [May 27, 2007, 7:10pm UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961/4 "2007-05-27T19:10:58Z")
Now I know why I didn’t go to college.
If I had a ? like that I would’ve killed myself.Even with the answer explained I can’t even begin to understand it, And I supposedly have an I.Q. of 135.Must be wrong lol:D
D
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### Author:  [@redrum](https://forums.speedlife.net/u/redrum)
#### Post date: [May 27, 2007, 7:25pm UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961/5 "2007-05-27T19:25:11Z")
Eh, these questions were really straightforward and easy once you knew the formulas.
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### Author:  [@ILCisDEAD](https://forums.speedlife.net/u/ILCisDEAD)
#### Post date: [May 27, 2007, 7:25pm UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961/6 "2007-05-27T19:25:48Z")
very easy…
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### Author:  [@vq30de](https://forums.speedlife.net/u/vq30de)
#### Post date: [May 27, 2007, 9:46pm UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961/7 "2007-05-27T21:46:22Z")
[quote=“misteroman$$$,post:4,topic:29961"”]
Now I know why I didn’t go to college.
If I had a ? like that I would’ve killed myself.Even with the answer explained I can’t even begin to understand it, And I supposedly have an I.Q. of 135.Must be wrong lol:D
D
[/quote]
If you cant pay attention in a class and figure out something as easy as that, youre an asshole
Trust me, youd do fine. College is full of retards.
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### Author:  [@ILCisDEAD](https://forums.speedlife.net/u/ILCisDEAD)
#### Post date: [May 28, 2007, 8:53am UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961/8 "2007-05-28T08:53:17Z")
[quote=“vq30de,post:7,topic:29961"”]
. College is full of retards.
[/quote]
sure is
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### Author:  [@redrum](https://forums.speedlife.net/u/redrum)
#### Post date: [May 28, 2007, 8:57am UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961/9 "2007-05-28T08:57:45Z")
60% of people in college go because they think they should, not because they want to or like the major they are pursuing.
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### Author:  [@Treads4Heads](https://forums.speedlife.net/u/Treads4Heads)
#### Post date: [May 28, 2007, 1:36pm UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961/10 "2007-05-28T13:36:51Z")
I had problems like this in highschool, not college. Easy once you learn the way to do them.
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### Author:  [@SVT3945](https://forums.speedlife.net/u/SVT3945)
#### Post date: [May 28, 2007, 5:09pm UTC](https://forums.speedlife.net/t/can-someone-help-me-solve-this/29961/11 "2007-05-28T17:09:06Z")
Holy shit, what happened to the 2 freakin trains leaving chi town and nyc???