Answer the following questions. Use complete sentences.
4. Describe the motion of a projectile in terms of horizontal and vertical vectors. Which vectors
change, which remain constant, and why?

The motion of a projectile consists of two independent motions:

- A uniform motion (constant velocity) along the horizontal direction

- A uniformly accelerated motion (constant acceleration, equal to the acceleration due to gravity) along the vertical direction

In terms of vectors, we have the following:

Velocity:

- The horizontal velocity does not change - therefore, this vector is constant

- The vertical velocity changes, as the vertical motion is accelerated - therefore, this vector changes. This is because there is a downward force acting on the projectile, the force of gravity.

Acceleration:

- There is no acceleration along the horizontal direction, so here the vector is zero

- The acceleration along the vertical direction is constant, and it is in the downward direction (acceleration due to gravity)

this is poiselle's equation from fluid mechanic in physics. mech eng

it would be c. predictability