To find
Which of the following choices is true about the components of the velocity vector of a projectile as it is moving upward?
Step-by-step explanation
While in projectile the vertical velocity receives a resistance by the gravity while there is no force acting on the horizontal direction
So the horizontal velocity remains constant and the vertical velocity decreases as it is moving upward.
Conclusion
The correct option is
Vx remains constant, Vy decreases