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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?
 one year ago
 one year 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?
 one year ago
 one year ago

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

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

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

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

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

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

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

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

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