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A satellite orbits the earth at a distance of 10,000 miles from the earth's center. At this distance the force of gravity on the satellite is 90 lbs.
(a) What would the force (in lbs) on the satellite be if the distance were 5,000 miles instead?
(b) At what distance (in mi) from the earth's center would the force on the same satellite be 10 lbs?
The track near the top of your favorite roller coaster has a circular shape with a diameter of 29 m. What is the speed of the roller coaster
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