Question

A 70 Kg skier is standing still on to of 30m high slope. After taking a deep breath, he starts skiing downhill towards the tip of the ramp where he takes off into the sky. As he reaches a 20m high point along his flight trajectory his speed (magnitude of his velocity) is 10 m/s.

- How much mechanical energy has been dissipated up to this point?

- What has this dissipated mechanical energy transformed into?

- Do you have any suggestions for the skier, if he wants to fly faster?

Answer 1

The solution is given in the attached image.

The possible explanation is provided. Energy conservation is used.