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Mario, a hockey player, is skating due south at a speed of 7.05 m/s relative to the ice. A teammate passes the puck to him. The puck has a speed of 9.69 m/s and is moving in a direction of 16.2 ° west of south, relative to the ice. What are (a) the magnitude and (b) direction (relative to due south) of the puck's velocity, as observed by Mario?

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