physics
posted by william .
A diver has a mass of 75 kg takes part in a competition by having to perform 10 dives off the 10m platform above the water. Before he takes part he snacks on an energy bar (150 g) which provides 15 kj of energy. How many would the diver need to consume to meet the necessary energy to perform all 10 of his dives?

Huh? Do you mean climbing 10 m ten times? As any swimmer knows, the effect of resistance of water is considerable, and it takes energy to swim, as it takes energy to heat his body in the water.
work= 75*g*10*10=you do it.
Number of energy bars= workabove/15,000