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F = ma (11–17)
Kinematics
FMA-2010-12 · 2010 F = ma (AAPT)

2010 F = ma Exam — Question 12

12. A ball with mass m projected horizontally offthe end of a table with an initial kinetic energy K. At a time t after it leaves the end of the table it has kinetic energy 3K. What is t? Neglect air resistance.
Source: Question 12, 2010 F = ma Exam, © 2010 American Association of Physics Teachers (AAPT) and the U.S. Physics Team. Adapted by PhysicsTrainer: reformatted into a separate question and answer choices for online multiple-choice practice; any shared setup from nearby questions is repeated here. Not affiliated with or endorsed by AAPT or the U.S. Physics Team.