Quantcast Homework help - XP Math - Forums
XP Math Home Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment PDF Version

Go Back   XP Math - Forums > Mathematics > Homework Help

Reply
 
Thread Tools Display Modes
Old 08-04-2007   #1
FEELIP
Guest
 
Posts: n/a
Default College Algebra Homework help

--------------------------------------------------------------------------------

I dropped a ball from 3ft,6ft, and 12ft. For each of those positions i have to use the position function to calculate the times. My original times were .56,.61,.87. The books position function is s(t)=-16t(squared)+initial velocity(in ft)+original height. I also have to verify this algebraically. Can someone please help me?

Last edited by FEELIP; 08-04-2007 at 11:08 AM..
  Reply With Quote
Old 08-04-2007   #2
Mr. Hui


 
Mr. Hui's Avatar
 
Join Date: Mar 2005
Posts: 10,653
Default

I don't understand the problem.



What time are you calculating for? the time it takes to hit the ground?
__________________
Do Math and you can do Anything!

Last edited by Mr. Hui; 08-04-2007 at 01:44 PM..
Mr. Hui is offline   Reply With Quote
Old 08-04-2007   #3
FEELIP
Guest
 
Posts: n/a
Default

neither do i..lol ... that is the formula my book has " the position function for a free falling object near earth's surface" unless there is a different position function that i am supposed to be using
  Reply With Quote
Old 08-04-2007   #4
FEELIP
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by Mr. Hui View Post
I don't understand the problem.



What time are you calculating for? the time it takes to hit the ground?
yes the time it take to hit the ground
  Reply With Quote
Old 08-04-2007   #5
Mr. Hui


 
Mr. Hui's Avatar
 
Join Date: Mar 2005
Posts: 10,653
Default

When you drop a book at 12 feet, the initial velocity is 0. So the position function is:







Conclusion: Your answer is correct.
__________________
Do Math and you can do Anything!
Mr. Hui is offline   Reply With Quote
Old 08-06-2007   #6
FEELIP
Guest
 
Posts: n/a
Default

Thank, now I see what I was doing wrong. Thank you so much.
  Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:15 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
XP Math