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 | 3rd 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  | 19th Jul, 2010, 12:53: PM

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