Question

A work skier whose mass is 70kg has an initial speed of 6m/s. Later the speed of the skier is becomes 11m/s. Determine the work done by the net force acting on the skier. Show complete solution.

Answer 1

By work-energy theorem:

$$W=\frac m2(v_1^2-v_2^2)=2975\text{ J}.$$