What is the kinetic energy of a 200-kg satellite as it follows a circular orbit of radius 8.0 × 106 m around the Earth? (Mass of Earth = 6.0 × 1024 kg.)
A. 5.0 × 109 J
B. 1.0 × 1010 J
C. 1.5 × 1010 J
D. 2.0 × 1010 J
E. 2.5 × 109 J
Answer: A
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