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Author Topic: Add. math!! dude slvri/astar/aadi/sam nebody help..!!!!!  (Read 22387 times)

nid404

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #120 on: November 07, 2009, 02:41:28 pm »
a cap= vector a/ |a|

Is this what u want to show
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Offline Ghost Of Highbury

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #121 on: November 07, 2009, 02:41:52 pm »
sqrt(5^2 + (-12)^2 = sqrt(139) = 13

thus unit vector = \frac{5i - 12j}{13} = \frac{5i}{13} - \frac{12j}{13}
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Offline ~~~~shreyapril~~~~

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #122 on: November 07, 2009, 02:43:35 pm »
great thanx mann..!!

By the way aadi pls pick up ur land line!!

busy or wat??
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nid404

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #123 on: November 07, 2009, 02:52:23 pm »
Quote from: A@di on November 07, 2009, 02:41:52 pm
sqrt(5^2 + (-12)^2 = sqrt(139) = 13

thus unit vector = \frac{5i - 12j}{13} = \frac{5i}{13} - \frac{12j}{13}

that's exactly what I said.......

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Offline Ghost Of Highbury

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #124 on: November 07, 2009, 03:06:11 pm »
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nid404

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #125 on: November 07, 2009, 03:06:40 pm »
no EADA
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Offline @d!_†oX!©

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #126 on: November 07, 2009, 03:07:37 pm »
ohhh yeah...didn't notice dude....
nd nid...dont worry we dont continue these convos for long as long as shrey doesn't comment on anything nd stretch the convo from thn
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Offline sameer210394

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #127 on: November 07, 2009, 03:12:04 pm »
Quote from: nid404 on November 07, 2009, 02:38:10 pm
@sameer-if u've understood the question plz help him

fresk i was havin ma dinner, ny ways adi has answered him, n shrey is wanting adi  to answer all his doubts so y shall i bother... fheww...   :P ;D
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Offline Ghost Of Highbury

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #128 on: November 07, 2009, 03:17:36 pm »
chal be...bhau mat kha..he didnt mention dat....u mocked him..so he said he was serious :P

@shrey - abbe, jyaada time nahi hai, book khol ke padhna start kar :P
« Last Edit: November 07, 2009, 03:24:29 pm by A@di »
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Offline sameer210394

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #129 on: November 07, 2009, 03:30:27 pm »
Quote from: A@di on November 07, 2009, 03:17:36 pm
chal be...bhau mat kha..he didnt mention dat....u mocked him..so he said he was serious :P

@shrey - abbe, jyaada time nahi hai, book khol ke padhna start kar :P

abbey he did, go few pages bak, imean 1 page...

abbey isme bhau kane jaisa kya hein,
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Offline Ghost Of Highbury

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #130 on: November 07, 2009, 03:44:38 pm »
abbe if some1 mocks u by saying "tujhe itna bhi nahi aata" to it is clear thatthe person is not gonna answer u.

4get it.. :P
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Offline @d!_†oX!©

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #131 on: November 07, 2009, 04:08:51 pm »
guys y is no one answering my post?????
plsss check IGCSE physics...
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Offline sameer210394

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #132 on: November 07, 2009, 04:23:37 pm »
Quote from: A@di on November 07, 2009, 03:44:38 pm
abbe if some1 mocks u by saying "tujhe itna bhi nahi aata" to it is clear thatthe person is not gonna answer u.

4get it.. :P

abbey he know the ans)) he wilin away tym... LMAO!!
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Offline Ghost Of Highbury

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #133 on: November 07, 2009, 04:24:42 pm »
Quote from: sameer210394 on November 07, 2009, 04:23:37 pm
abbey he know the ans)) he wilin away tym... LMAO!!

lol..actually sahi baat hai , if u can answer the lambda and constants ka vector question..ismein kya hai phir?..rofl
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Offline astarmathsandphysics

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Re: Add. math!! dude slvri/astar/aadi/nebody help..!!!!!
« Reply #134 on: November 07, 2009, 04:40:23 pm »


this is the original doubt i had!!
i tired it but i got ans as 1.3 sec wheas in proving it must be 1.8!!!

help!!
r(spacecraft)=12j+(40i+15j)t=r(nissile)=46i+(ki+30j)(t-0.5)
equating the i components 40t=46+k(t-0.5)
equating the j components 12+15t=30(t-0.5) from this 27=15t so t=1.8
the from the i component  equation 72=46+2.3k so k=20
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