A gun is on the same horizontal level as a target 484 meters away.  A bullet is fired from the gun with a muzzle velocity of 154m/s.  At what angle of elecation should the muzzle of the gun be set in order to ensure the bullet hits the target?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A gun is on the same horizontal level as a target 484 meters away.  A bullet is fired from the gun with a muzzle velocity of 154m/s.  At what angle of elecation should the muzzle of the gun be set in order to ensure the bullet hits the target?

Hint:  You may use the formulas for the horixzontal x(t) and vertical y(t) displacement of the particle:

x(t) = ucos(α)t,     y(t) - usin(α)t - ½gt,       g = 10m/sec2.

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