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

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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