a green block of mass m slides to the right on a frictionless floor and collides elastically with a red block of mass m which is initially at rest. after the collision the green block is at rest and the red block is moving to the right.

Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.