Answer
In uniform circular motion, the net force is always perpendicular to the velocity. However, when a projectile is launched horizontally, the net force is only perpendicular to the initial velocity.
Work Step by Step
In uniform circular motion, the net force is always perpendicular to the velocity. However, when a projectile is launched horizontally, the net force is only perpendicular to the initial velocity. As the projectile starts falling, the net force is parallel to the vertical component of velocity, which accelerates the projectile in the vertical direction.
