An 90-kg satellite orbits a distant planet with a radius of 4000 km and a period of 280 min. From the radius and period, you calculate the satellite's acceleration to be 0.56 m/s2. What is the gravitational force on the satellite?
A. 50.4 N
B. 90 N
C. 720 N
D. 12,000 N
Answer: A. 50.4 N
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A. 105 J. B. 145 J. C. 186 J. D. 200 J. E. 243 J.
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