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A 25.0 kg asteroid initially at rest and located at 6.37 x 10 10 m from the center of Earth accelerates toward Earth due to

A 25.0 kg asteroid initially at rest and located at 6.37 x 1010 m from the center of Earth accelerates toward Earth due to Earth's gravity. What is the speed of the asteroid (in km/s) when it strikes the surface of the Earth. (G= 6.67 x 10-11 m/kg-s2, radius of Earth = 6.37 x 106 m, mass of Earth = 5.97 x 1024 kg, ) 

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