A tennis ball is thrown upward at an angle from point A. It follows a parabolic trajectory and hits the ground at point D. At the instant shown, the ball is at point B. Point C represents the highest
-While in flight, how do the x and y components of the velocity vector of the ball compare at the points A and D?
A)The velocity components are non-zero at A and are zero m/s at D.
B)The velocity components are the same in magnitude and direction at both points.
C)The velocity components have the same magnitudes at both points, but their directions are reversed.
D)The velocity components have the same magnitudes at both points, but the directions of the x components are reversed.
E)The velocity components have the same magnitudes at both points, but the directions of the y components are reversed.

Question

A tennis ball is thrown upward at an angle from point A. It follows a parabolic trajectory and hits the ground at point D. At the instant shown, the ball is at point B. Point C represents the highest 
-While in flight, how do the x and y components of the velocity vector of the ball compare at the points A and D?
A)The velocity components are non-zero at A and are zero m/s at D. 
B)The velocity components are the same in magnitude and direction at both points. 
C)The velocity components have the same magnitudes at both points, but their directions are reversed. 
D)The velocity components have the same magnitudes at both points, but the directions of the x components are reversed. 
E)The velocity components have the same magnitudes at both points, but the directions of the y components are reversed.

Quizplus · Accepted Answer

The x components of velocity remain constant in projectile motion, while the y components are equal in magnitude but opposite in direction at points A and D due to the symmetry of the projectile's path.

A Tennis Ball Is Thrown Upward at an Angle from Point