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Question

As a projectile files through the air with negligible air resistance, what is true of the forces acting on it?


A
The vertical force is zero and the horizontal force is constant.
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B
The vertical force is constant and the horizontal force is zero.
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C
The vertical force is increasing and the horizontal force is constant.
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D
The vertical force is constant and the horizontal force is increasing.
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E
No forces act on a projectile as it flies through the air.
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Solution

The correct option is B The vertical force is constant and the horizontal force is zero.
In a projectile motion , there is no acceleration in the horizontal direction therefore horizontal force is zero .
     Whereas , constant gravitational acceleration $$g$$ is acting in vertical direction ,therefore vertical force (weight) is constant .

Physics

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