Unit 5: Work, Energy and Power
Problem Set C
Suzie Lavtaski is at rest on top of a ski slope with an initial height of 1687.4 meters above the slope's bottom. While descending the hill, a total amount of work of - 264987 Joules are done upon her 64-kg body. Determine her speed (in m/s) at the bottom of the hill just prior to skidding to a stop.
0.5 m vi2 + m g h i + F d cos = 0.5 m vf2 + m g h f
General information about work and energy problems is described on the Set C Overview page.
A detailed discussion of how to analyze physical situations using work-energy bar charts is provided online at The Physics Classroom.
A detailed description of the work-energy relationships for situation in which external forces are doing work is provided online at The Physics Classroom.
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