The horizontal speed of a projectile
A)is zero.
B)stays constant.
C)continuously increases.
D)continuously decreases.
E)sometimes decreases and sometimes increases.

Question

Quizplus · Accepted Answer

The horizontal speed of a projectile stays constant because there's no force acting on it horizontally. Horizontal motion is not affected by gravity, and so the projectile continues moving at a constant speed unless acted upon by an external force.

The Horizontal Speed of a Projectile