Question

The energy transfer diagram represents the energy of a person diving into a pool.

How much thermal energy is generated?

A) 1000 J
B) 2000 J
C) 7000 J
D) 15,000 J

Answer 1

The answer is A) 1000 J
According to the law of conservation of energy, the total energy before an action is always equal to the total energy after the action.
So that is, the total energy is 8000J found as potential energy, 7000J has transformed into kinetic energy, then the thermal energy should be the remaining 1000J.

Hope this helps.