As a projectile moves along its parabolic trajectory, which of the following remain constant (ignoring air resistance, and defining the $z$ axis as pointing upward)?
A) Its speed
B) Its velocity
C) Its $x$-velocity and $y$-velocity
D) Its $z$-velocity
E) Its acceleration
F) Its $x$-velocity, $y$-velocity, and acceleration
$\mathrm{T}$. Some other combination of the given quantities

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The Answer of As a projectile moves along its parabolic trajectory, which of the following remain constant (ignoring air resistance, and defining the $z$ axis as pointing upward)?
A) Its speed
B) Its velocity
C) Its $x$-velocity and $y$-velocity
D) Its $z$-velocity
E) Its acceleration
F) Its $x$-velocity, $y$-velocity, and acceleration
$\mathrm{T}$. Some other combination of the given quantities

As a Projectile Moves Along Its Parabolic Trajectory, Which of the Following