# 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:** 1
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### Author: ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@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")

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![http://www.glenbrook.k12.il.us/GBSSCI/PHYS/Class/1DKin/U1L6a1.gif](http://www.glenbrook.k12.il.us/GBSSCI/PHYS/Class/1DKin/U1L6a1.gif)  
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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