While a rock thrown upward at 50 degrees to the horizontal rises, neglecting air drag, its horizontal component of velocity
A)increases.
B)remains unchanged.
C)decreases.

Question

Quizplus · Accepted Answer

The horizontal component of velocity remains unchanged because there is no force acting on it horizontally. The only force acting on the rock is gravity which acts vertically downward. Thus, the horizontal component remains constant throughout its motion.

While a Rock Thrown Upward at 50 Degrees to the Horizontal