Answer:
E = 2750 J at h = 5 m
Explanation:
The gravitational potential energy is given by :
[tex]E=mgh[/tex]
In this case, m is the mass of swimmer is constant at every heights. So,
At h = 1 m, E = 550 J
[tex]550=m\times 10\times 1\\\\m=55\ kg[/tex]
So, at h = 5 m, gravitational potential energy is given by :
[tex]E=55\times 10\times 5\\\\E=2750\ J[/tex]
So, the correct option is (B).
