With the X Axis Horizontal and the Y Axis Vertically $\Delta$

With the x axis horizontal and the y axis vertically upward,the change in the horizontal component of velocity, $\Delta$ v_x,and the change in the vertical component of velocity, $\Delta$ v_y,of a projectile are related to the time since leaving the barrel, $\Delta$ t,as

A) $\Delta$ v_x = 0; $\Delta$ v_y = 0.
B) $\Delta$ v_x = g $\Delta$ t; $\Delta$ v_y = 0.
C) $\Delta$ v_x = 0; $\Delta$ v_y = g $\Delta$ t.
D) $\Delta$ v_x = 0; $\Delta$ v_y = -g $\Delta$ t.
E) $\Delta$ v_x = g $\Delta$ t; $\Delta$ v_y = -g $\Delta$ t.

Correct Answer:

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