Asked 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?

I want to see the calculations.
Answered by drwls
That'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
Answered by kabiru
the range of a target is found to be 20 km. a shell leaves a gun with a velocity of 500m/s. what must be the angle of elevation of the gun if the ground is level?
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