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
Expert Answer
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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