Answer:
47.5kJ
Explanation:
Before climbing the cliff
[tex]E_t = E_k[/tex]
[tex]E_k=\frac{1}{2} mv^2\\E_k=\frac{1}{2} 500*15^2\\\\E_k = 56250J\\[/tex]
At 2.
[tex]E_t = E_k+E_p[/tex]
