Gravitational acceleration can be on a surface.Logical formLearned from2 sentences. Depth may pertain-to gravitational wells.Logical formLearned from2 sentences. A difference can be in gravitational energy.Logical formLearned from2 sentences. A gravitational interaction can be weak.Logical formLearned from2 sentences. Persons can be at a bottom of a gravitational well.Logical formLearned from2 sentences. Respect can be to a gravitational field.Logical formLearned from2 sentences. A (background radiation) can be gravitational.Logical formLearned from2 sentences. A gravitational potential energy may pertain-to a material.Logical formLearned from2 sentences. Heat can be from a gravitational contraction of a core.Logical formLearned from2 sentences. A decrease can be in gravitational pull.Logical formLearned from2 sentences. Gravitational force may undergo a measurement.Logical formLearned from2 sentences. Black holes can be with gravitational fields.Logical formLearned from2 sentences. A gravitational potential energy may be converted to heat.Logical formLearned from2 sentences. A gravitational force may depend on a distance.Logical formLearned from2 sentences. An object may escape a gravitational pull of a planet.Logical formLearned from2 sentences.