work done by nonconservative Forces?

Question

Catching a wave, a 72kg surfer starts with a speed of 1.3m/s, drops through a height of 1.75m, and ends with a speed of 8.2m/s. How much nonconservative work was done on the surfer?

Answer 1

Calculate his initial and final kinetic energies (E = mv²/2) The difference between them is the amount of work done.


Doug

Answer 2

what you need to do is is calculate how much total energy he had in the beginning and then at the end...the difference will give you your nonconservative energy loss...then from there you can find your work