Question
Which vector can be associated with a plane area? And what is its direction?

Answer

Area vector, outward drawn Normal to the plane will be its direction.

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A gun can fire shells with maximum speed v0 and the maximum horizontal range that can be achieved is $\text{R}=\frac{\text{v}^2_0}{\text{g}}.$

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(Hint: This problem can be approached in two different ways:

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