Answer:
Diver hits the water with kinetic energy of 5000 J 
Step-by-step explanation:
We have given weight of the diver F = 500 N 
Diver steps off a diving board which is 10 m above the water 
So work don by diver 

Now according to energy theorem work done is equal to kinetic energy 
So kinetic energy will be equal to 5000 J 
So diver hits the water with kinetic energy of 5000 J