While visiting Planet Physics, you toss a rock straight up at 11 m/s and catch it 2.5

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While visiting Planet Physics, you toss a rock straight up at 11 m/s and catch it 2.5 s later. While you visit the surface, your cruise ship orbits at an altitude equal to the planet’s radius every 230 min. What are the 

(a) Mass

(b) Radius of Planet Physics?

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