ball moves in a circular trajectory. At a certain instance, the velocity and the acceleration vectors of the ball are directed as shown in the figure below. /hat can be said about the speed of the ball at this instance? O The speed is decreasing (ball is slowing down) O The situation shown in the figure is impossible because the acceleration must be perpendicular to the velocity in any circular motion O The speed is increasing (ball is speeding up) O The speed remains constant, because the ball is moving along a circular trajectory

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Projectile Motion