Answer:
Work done, W = 3180.372 Joules
Explanation:
It is given that,
Mass of the water skier, m = 70.3 kg
Initial speed of the water skier, u = 6.1 m/s
Final speed of the skier, v = 11.3 m/s
We need to find the work done by the net external force acting on the skier. It is given by using work energy theorem as :
[tex]W=\Delta E[/tex]
[tex]W=\dfrac{1}{2}m(v^2-u^2)[/tex]
[tex]W=\dfrac{1}{2}\times 70.3\ kg((11.3)^2-(6.1)^2)[/tex]
W = 3180.3 J
So, the work done by the net external force acting on the skier is 3180.372 Joules. Hence, this is the required solution.
