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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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