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Title: Sputnik I was launched into orbit around Earth in 1957. It had a perigee (the closest approach to ... Post by: GollumOfOz on Jul 6, 2017 Sputnik I was launched into orbit around Earth in 1957. It had a perigee (the closest approach to Earth, measured from Earth's center) of 6.81 × 106 m and an apogee (the furthest point from Earth's center) of 7.53 × 106 m. What was its speed when it was at its perigee? The mass of Earth is 5.97 × 1024 kg and G = 6.67 × 10-11 N • m2/kg2.
A) 7180 m/s B) 7840 m/s C) 8230 m/s D) 11,000 m/s E) 13,400 m/s Title: Re: Sputnik I was launched into orbit around Earth in 1957. It had a perigee (the closest approach ... Post by: alblove on Jul 6, 2017 Content hidden
Title: Re: Sputnik I was launched into orbit around Earth in 1957. It had a perigee (the closest approach to ... Post by: GollumOfOz on Sep 13, 2017 Makes sense to me
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