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December 20, 2014

December 20, 2014

Posted by **The range of a target is found to be 20km. A shell leaves a gun with a velocity of 500ms-1. What must be the angle of elevation of the gun if the ground is leueled?** on Wednesday, February 1, 2012 at 8:55am.

- Physics -
**drwls**, Wednesday, February 1, 2012 at 10:16amThat's quite a long name you have.

R = (Vo^2/g)*sin(2A) = 20,000 m

sin(2A) = 0.785

2A = 51.7 or 128.3 degrees

A = 25.85 or 64.15 degrees

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