For general projectile motion with no air resistance,the horizontal component of a projectile's acceleration
A)is always zero.
B)remains a non-zero constant.
C)continuously increases.
D)continuously decreases.
E)first decreases and then increases.

Question

Quizplus · Accepted Answer

The horizontal component of a projectile's velocity remains constant throughout its motion, since there is no external force acting horizontally. Therefore, the acceleration in the horizontal direction must be zero as well, according to Newton's second law (F = ma).

For General Projectile Motion with No Air Resistance,the Horizontal Component