The international space station orbits at a height that is 408,000 m above the surface of the earth. a)What acceleration due to gravity is experienced on the ISS? B)What percent would your weight be in the ISS compared to standing on the surface of the earth? c) Knowing that it takes the ISS 90 minutes to orbit the earth, what is the orbital velocity of the ISS?

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!