Unit 5: Work, Energy and Power
Problem Set C
A 231-gram baseball leaves the bat with a speed of 76.2 m/s. It sails through the air, encountering air resistance which does a total of -236 Joules of work on the ball over the course of its entire trajectory. What is its speed (in m/s) of the ball the instant prior to being caught (at the same height as which it was hit)?
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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