What is the force of gravity between two objects that are 2.0m apart? the mass of the first object is 0.25 kg, and the mass of the second object is 0.63 kg.

The force of gravity between two objects is

                         F = g (m₁ m₂) / R² .

'g' is the universal gravitational constant . . . 

                                             6.67 x 10⁻¹¹ newton-meter² / kilogram²

m₁ is the mass of one mass . . . 0.25 kg

m₂ is the mass of the other mass . . . 0.63 kg

'R' is the distance between their centers . . . 2.0 meters

           F = (6.67 x 10⁻¹¹ nt-m²/kg²) x (0.25 kg) x (0.63 kg) / (2 m)²  = 

                 (6.67 x 10⁻¹¹ nt-m²/kg²) x        (0.1575 kg²)  /  (4 m²)  = 

                     2.626 x 10⁻¹² newton .

                     (about  0.000 000 000 009 45  ounce)

This is the main reason why, when we stand next to
fat people, cement trucks, tall buildings, or mountains,
we don't feel gravitationally drawn towards them.

Amethod of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.