Problem 3: Work, Energy, Power, and Energy Conservation. When TWICE went to Switzerland, Sana crossed the bridge in Jungfraujoch. One of its peak walk (Gstaad Glacier 3000 area) has the height of 9800 ft above sea level. (a) What is Dahyun and Sana's (mass of 48 kg and 49 kg respectively) gravitational potential energy at that peak walk? (b) Let us

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Problem 3: Work, Energy, Power, and Energy Conservation.
When TWICE went to Switzerland, Sana crossed the bridge in
Jungfraujoch. One of its peak walk (Gstaad Glacier 3000 area)
has the height of 9800 ft above sea level. (a) What is Dahyun
and Sana's (mass of 48 kg and 49 kg respectively)
gravitational potential energy at that peak walk? (b) Let us
imagine that they plan to ski down the glaciers in ski school
and huskies which has a height from point A [use the previous
height as an approximation] to B [9722 ft above sea level] and
vertical distance of 39.37 ft. Find Sana's final speed as she attempts to ski to point B [hint: you must find the
diagonal distance and use the work energy theorem – relation of potential and kinetic energy]. (c) Find the total
work done made by Sana during the skiing [hint: use any method that you are confident with].
[Sana is excited)
Transcribed Image Text:Problem 3: Work, Energy, Power, and Energy Conservation. When TWICE went to Switzerland, Sana crossed the bridge in Jungfraujoch. One of its peak walk (Gstaad Glacier 3000 area) has the height of 9800 ft above sea level. (a) What is Dahyun and Sana's (mass of 48 kg and 49 kg respectively) gravitational potential energy at that peak walk? (b) Let us imagine that they plan to ski down the glaciers in ski school and huskies which has a height from point A [use the previous height as an approximation] to B [9722 ft above sea level] and vertical distance of 39.37 ft. Find Sana's final speed as she attempts to ski to point B [hint: you must find the diagonal distance and use the work energy theorem – relation of potential and kinetic energy]. (c) Find the total work done made by Sana during the skiing [hint: use any method that you are confident with]. [Sana is excited)
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