A young woman on a skateboard is pulled with a rope attached to a bicycle. The velocity of the skateboarder is rv = (4.1 m s)x$ and the force exerted on her by the rope is r F = (17 N)x$ + (12 N)y$. (a) Discover the work done on the skateboarder with the rope in 25 seconds. (b) Assuming the velocity of the bike is the same as that of the skateboarder discover the work the rope does on the bicycle in 25 seconds.