sign up I login
 advanced
refer a friend - earn nickels!!

Ask & Discuss Questions with Community & Experts

 Moderation Team
 90 chars left    advanced
Ask iit jee aieee pet cbse icse state board community Community Discussion Question: mechanics...
Forum Index -> Mechanics like the article? email it to a friend.  
Author Message
[Post New]26 May 2008 15:48:10 IST
    Subject: mechanics...
[Up] View Post
chinmay_saxena01 (565)

Blazing goIITian

Olaaa!! Perrrfect answer. 97  [137 rates]
chinmay_saxena01's Avatar
total posts: 500    
offline Offline

hey guys i m not getting the answer....plz help me''''


a man in a balloon rising vertically with an accleration of 4.9m/s^2 releases a ball 2 sec after the balloon is let go from the ground.The greatest height above the ground reached ny ball is ?????
<TABLE CELLSPACING="1" CELLPADDING="1" BORDER="0">
<TR><TD>


<DIV ALIGN="right">Glitter Graphics</DIV></TD></TR></TABLE>
if i helped u plzzzzz rate me,,,,,,,
    
[Post New]26 May 2008 16:01:02 IST
    Subject: Re:mechanics...
[Up] View Post
learner (325)

Blazing goIITian

Olaaa!! Perrrfect answer. 53  [83 rates]
learner's Avatar
total posts: 453    
offline Offline

S= 0.5 at2


 =0.5*4.9*4


=9.8 m..


Is that right?


 
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[Post New]26 May 2008 16:09:47 IST
    Subject: Re:mechanics...
[Up] View Post
rohitkuruvila (287)

Hot goIITian

Olaaa!! Perrrfect answer. 49  bad job dude!! I dont approve of this answer! 1  [72 rates]
rohitkuruvila's Avatar
total posts: 169    
offline Offline

is it 14.7 m
 this reply: 2 points  (with 0 Olaaa!! Perrrfect answer.   in 1 votes )   [?]
 
You have to be logged on to rate
  
[Post New]26 May 2008 16:10:11 IST
    Subject: mechanics...
Accepted Answer [?] [Up] View Post
spideyunlimited (3493)

Moderator

Olaaa!! Perrrfect answer. 583  [872 rates]
spideyunlimited's Avatar
total posts: 2831    
offline Offline
s = 1/2 at^2
s = 1/2 * 4.9* 4
= 9.8 m

v = 0 + at
v = 4.9 * 2 = 9.8 m/s

V^2 - U^2 = 2as
0 - (9.8)^2 = 2*-9.8*s
s = 4.9 m

so Total height reached = 9.8 + 4.9 = 14.7 m
---------------------------------------------------------------
* Gaurav Ragtah ( aka Artemis Fowl )

* Agent 'G' [sniper] - SD-6 (Alliance of Twelve)

* Your friendly neighborhood spideyunlimited
 this reply: 10 points  (with 2 Olaaa!! Perrrfect answer.   in 2 votes )   [?]
 
You have to be logged on to rate
  
[Post New]26 May 2008 16:26:46 IST
    Subject: Re:mechanics...
[Up] View Post
learner (325)

Blazing goIITian

Olaaa!! Perrrfect answer. 53  [83 rates]
learner's Avatar
total posts: 453    
offline Offline

Sorry!!!Forgot all about inertia!!:-D
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
 
Forum Index -> Mechanics
Go to:   

Top Offers for goIITians
Correspondence Courses
Brilliant Tutorials
Narayana Institute
Aakash Institute
Classroom/Crash Courses
Narayana - Kota , Delhi , Others
Brilliant Tutorials - Class , Crash
Aakash Institute - Medical , Engg
Online Test Series
Brilliant Tutorials
Narayana Institute
Aakash Institute
Mahesh Tutorials
AMITY      Sri Chaitanya