Answer: 4,998 J
Explanation:
The gravitational potential energy of an object is given by
[tex]E_p=mgh[/tex]
where
m is the mass of the object
g is the gravitational acceleration
h is the heigth of the object with respect to a reference point
In this problem, m=68 kg, g=9.8 m/s^2, and h=7.5 m is the heigth of the diver with respect to the surface of the pool. Therefore, the gravitational potential energy of the diver with respect to the surface of the pool is
[tex]E=mgh=(68 kg)(9.8 m/s^2)(7.5 m)=4,998 J[/tex]
