Question: In uniform circular motion, the net force is perpendicular to the velocity and changes the direction of the velocity but not the speed. If a

In uniform circular motion, the net force is perpendicular to the velocity and changes the direction of the velocity but not the speed. If a projectile is launched horizontally, the net force (ignoring air resistance) is perpendicular to the initial velocity, and yet the projectile gains speed as it falls. What is the difference between the two situations?

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