EVERYDAY SCIENCE

Detailed explanation-1: -The answer is gravity: an invisible force that pulls objects toward each other. Earth’s gravity is what keeps you on the ground and what makes things fall. Anything that has mass also has gravity.

Detailed explanation-2: -Yes, the gravity is an invisible force because one cannot see the field lines due to gravity.

Detailed explanation-3: -In fact, we do not feel the force of gravity unless there is some opposing contact force to counteract it. This opposing force is termed normal force, which in contrast to gravity, is a contact force that acts upon objects that are physically associated with one another.

Detailed explanation-4: -Gravity is indeed a real force, but not in the traditional sense. In other words, gravity is not a direct, classical, action-at-a-distance force between two objects. However, in the broader sense, gravity is indeed a force because it describes the resulting interaction between two masses.