Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack
GMAT Club

It is currently 27 Mar 2017, 07:53

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

An object thrown directly upward is at a height of h feet

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Director
Director
avatar
Joined: 06 Jan 2008
Posts: 552
Followers: 2

Kudos [?]: 375 [0], given: 2

An object thrown directly upward is at a height of h feet [#permalink]

Show Tags

New post 28 Apr 2008, 13:27
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

An object thrown directly upward is at a height of h feet after t seconds, where h = -16 (t - 3)2 +
150. At what height, in feet, is the object 2 seconds after it reaches its maximum height?
A. 6
B. 86
C. 134
D 150
E. 214
Senior Manager
Senior Manager
avatar
Joined: 19 Apr 2008
Posts: 318
Followers: 3

Kudos [?]: 83 [0], given: 0

Re: PS - object [#permalink]

Show Tags

New post 28 Apr 2008, 14:16
saravalli wrote:
An object thrown directly upward is at a height of h feet after t seconds, where h = -16 (t - 3)2 +
150. At what height, in feet, is the object 2 seconds after it reaches its maximum height?
A. 6
B. 86
C. 134
D 150
E. 214


can you please put the proper sign * , ^ in the equation of h given ? I can't interprete it correctly.
Director
Director
avatar
Joined: 06 Jan 2008
Posts: 552
Followers: 2

Kudos [?]: 375 [0], given: 2

Re: PS - object [#permalink]

Show Tags

New post 28 Apr 2008, 17:16
h = -16 (t - 3)^2 + 150
sorry :)
Current Student
User avatar
Joined: 17 Jan 2008
Posts: 586
Location: Ann Arbor, MI
Schools: Ross '12 (MBA/MS)
Followers: 3

Kudos [?]: 130 [0], given: 34

Re: PS - object [#permalink]

Show Tags

New post 28 Apr 2008, 18:11
saravalli wrote:
An object thrown directly upward is at a height of h feet after t seconds, where h = -16 (t - 3)2 +
150. At what height, in feet, is the object 2 seconds after it reaches its maximum height?
A. 6
B. 86
C. 134
D 150
E. 214


Max height: t=3, h=150. You know that anything^2 ((t-3)^2) is positive. A negative number (-16) times a positive number ((t-3)^2) must be negative. So to maximize 'h' you want to minimize '-16(t-3)^2'.

2 seconds after max height: t=5, h=86.

Answer: B.
_________________

Profile | GMAT | Erb Institute

Senior Manager
Senior Manager
avatar
Joined: 06 Aug 2007
Posts: 367
Followers: 1

Kudos [?]: 34 [0], given: 0

Re: PS - object [#permalink]

Show Tags

New post 29 Apr 2008, 17:59
saravalli wrote:
An object thrown directly upward is at a height of h feet after t seconds, where h = -16 (t - 3)2 +
150. At what height, in feet, is the object 2 seconds after it reaches its maximum height?
A. 6
B. 86
C. 134
D 150
E. 214


Max height is when t = 3 so the first part = 0 and the Max height = 150

After 2 sec after max height is when t = 5
substitute and you will get B!!!
Re: PS - object   [#permalink] 29 Apr 2008, 17:59
Display posts from previous: Sort by

An object thrown directly upward is at a height of h feet

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.