Answer :
The direction of the velocity of the projectile a it trike the ground is 63.43°.
What is velocity?
A body's or an object's motion's direction. Speed is fundamentally a scalar quantity. Velocity is a vector quantity in its purest form. It refers to the rate at which distance varies. It is the rate of displacement change.
What is height?
Height is a measurement of vertical distance, or how high something or someone is (how tall they are) (how "high" a point is).
The range ( X) of cannon ball is equal to height (h) of the cliff, which is initial height of cannon ball.
∴ X= h
Therefore, the angle which final velocity vector of the cannon ball makes with and below horizontal is given by
θ= tan ⁻¹ (2h/x)
tan ⁻¹ (2h/h) (∴ X= h)
= tan ⁻¹ 2
≈ 63.43°
Therefore, the direction of the velocity of the projectile a it trike the ground is 63.43°.
Learn more about velocity from the given link.
https://brainly.com/question/80295?source=archive
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