A $60$ kg water skier is pulled by a tow rope behind at boat at d constant velocity, The tension in the rope is $120$ N$.$The water skier's displacement is $250$ m  

 

A$)$ Draw an FBD

b$)$ What is the change in kinetic energy of the water skier?

c$)$ How much net work is done on the water skier?

d$)$ How much work was done by the tension force?

e$)$ How much work was done by friction?

f$)$What is the coefficient of friction?