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haridas_mandal
Group Title
Minimum velocity of a projectile is 20 m/s when a body is projected at an angle of 60 degree with the horizontal .Find the vel of projection....20 m/s,10 m/s,30 m/s or 40 m/s?
 2 years ago
 2 years ago
haridas_mandal Group Title
Minimum velocity of a projectile is 20 m/s when a body is projected at an angle of 60 degree with the horizontal .Find the vel of projection....20 m/s,10 m/s,30 m/s or 40 m/s?
 2 years ago
 2 years ago

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JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
so you want the horizontal velocity?
 2 years ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
The question i have posted verbatim from my daughter's weekly test. I am not sure but there must be some conditionalities for 20 m/s to be the minimum velocity ..
 2 years ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
and there is no diagram or anything?
 2 years ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
No none. Only 4 options as I noted above.
 2 years ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
it doesnt even have the word "the" at the start of the sentence? Perhaps she copied the question down wrong?
 2 years ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
My mistake it should read "The Minimum.. I have the question paper right in front of me..
 2 years ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
and it just gives "find the vel of projection"?
 2 years ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
It reads " The Minimum.....with the horizontal. The velocity of projection is 1) 20 m/s 2) 10 m/s 3) 30 m/s 4) 40 m/s "
 2 years ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
RIGHTTT thats much better. so the minimum velocity is 20m/s in the horizontal direction. find the absolute velocity. okay so i think it looks like this
 2 years ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
dw:1350148494782:dw your trying to find the hypotenuse
 2 years ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
yes, that gives an answer which is one of your possible answers
 2 years ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
Her text book says there is a minimum velocity of projection to reach a specific point .I am not very satisfied taking 20 m/s as the vel in the horizontal direction. It should have been 20 Cos 60 as the horizontal component as it remains constant..is there any other possibility?
 2 years ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
wel in this isntance ? = 40 m/s
 2 years ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
what is the specific point?
 2 years ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
How did you deduce? Pl help as I need to understand & then teach my daughter.
 2 years ago

JamesWolf Group TitleBest ResponseYou've already chosen the best response.0
Well I just found the hypotenuse of that triangle \[velocity = hypotenuse = \frac{20 m /s}{\cos (60)} = 40 m/s\]
 2 years ago
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