A person is attracted toward the center of Earth by a gravitational force of 500 N. The force with which Earth is attracted toward the person is
1) 500 N
2) infinitesimally small
3) billions and billions of tons
principally because
4) the forces in question make an action/reaction pair.
5) the mass of the person is negligible compared to the mass of Earth.
6) Earth itself weighs billions and billions of tons.
7) of inertia.
Answer: 1, 4
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