MCAS Physics Exam Practice

Category - Introductory Physics

A 9 kg model airplane lies horizontally at a constant speed. If the plane suddenly dives from its altitude of 50 m and levels off at 20 m, how much potential energy does it lose in the dive?
  1. 450 J
  2. 1800 J
  3. 2700 J
  4. 9000 J
Explanation
Answer: C - 2700 J
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