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Final answer:The velocity of weight B and its relative velocity to handle A depend on the mechanical linkage between them. Assuming a 1:1 movement ratio, the velocity would be 0.5 m/s and the relative velocity would be 0 m/s. However, this may change if the mechanism alters the movement ratio.Explanation:The question revolves around a physics concept related to kinematics, specifically the relative motion in a mechanism. To solve for the velocity of the weight B and the relative velocity of weight B with respect to handle A, we would need additional information about the mechanism, such as the configuration or how the motion of handle A is related to the motion of weight B (e.g., through pulleys, gears, levers, etc.). Without this additional information, it's impossible to provide a specific answer. However, since the athlete is pulling handle A with a constant velocity of 0.5 m/s, if we assume a direct connection where the movement of A directly corresponds to the movement of B, then:The velocity of the weight B would be the same as the velocity of handle A, 0.5 m/s, if the movement ratio is 1:1.The relative velocity of weight B with respect to handle A would be 0 m/s, since they are moving at the same constant velocity in this assumption.If the mechanism includes elements that change the ratio of movement, such as a system of pulleys, these values would change according to the mechanical advantage provided by the system....