CBSE Class 11-science Answered
prove that a gun will shoot three times as high when its angle of elevation 60 degree as when it is 30 degree, but cover the same horizontal range.
Asked by dharya21 | 03 Jul, 2010, 12:00: AM
We know that Maximum height reached, H = 

and, horizontal range R =
'

For θ = 300,
H1 =
=
= 



R1 =
= 


For θ = 600 ,
H2 =
= 


R2 =
= 


Therefore,

Hence Proved.
Answered by | 19 Jul, 2010, 12:53: PM
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