To calculate the gravitational force between two objects, you need the mass of the two objects and the distance between the two objects. Therefore, the correct response is:
- the mass of the two objects
- the distance between the two objects
This information is used in Newton's law of universal gravitation, which states that the gravitational force \( F \) between two masses \( m_1 \) and \( m_2 \) separated by a distance \( r \) is given by the formula:
\[ F = G \frac{m_1 m_2}{r^2} \]
where \( G \) is the gravitational constant.