The figure represents the parabolic trajectory of a ball going from a to e in Earth gravity but without air resistance. The initial velocity of the ball is V_o at an angle $\theta$ to the horizon. The vertical dashed lines represent equal time interval, $\Delta$t. The horizontal velocity at point c is A) 0. B) V_o cos $\theta$). C) V_o sin $\theta$). D) V_o. E) depends on what g is along the path.

Question

Quizplus · Accepted Answer

At point c, the ball has reached its maximum height and is momentarily at rest before falling back down. Therefore, its vertical velocity is 0 at this point. Since there is no air resistance, the horizontal velocity remains constant throughout the entire trajectory. Thus, the horizontal velocity at point c is equal to the initial horizontal velocity, which is V_o cos F1F1F1S1F1F1F10).

The Figure Represents the Parabolic Trajectory of a Ball Going θ\thetaθ

The Figure Represents the Parabolic Trajectory of a Ball Going $\theta$