MasteringPhysics: Homework #7 Google Chrome Secure l https://session.masteringphysics.com/myct/itemView?assignmentProblemID=84574265 Resources ▼ Homework a7 Problem 13.44 < previous 2 of 11 |next s Problem 13.44 Part A The unexplored planet Alpha Centauri Ill has a radius of 7.0 × 106 m A visiting astronaut drops a rock, from rest, into a 180-m-deep crevasse. She records that it takes 6.0 s for the rock to reach the bottom. What is the mass of Alpha Centauri Ill? Express your answer with the appropriate units. 田 。 HA 27 Submit My Answers Give Up Incorrect; Try Again; 17 attempts remaining Continue 中 目 1:35 AM 11/18/2017