The two variables that affect the gravitational force between two objects are
Density and speed
Mass and distance
Mass and speed
Velocity and distance
Mass and distance
The correct answer is: Mass and distance
The two variables that affect the gravitational force between two objects are mass and distance.
To understand why these variables affect the gravitational force, we can refer to Newton's law of gravitation. According to this law, the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
1. Mass: The greater the mass of the objects, the stronger the gravitational force between them. Increasing the mass of one or both objects will result in a stronger gravitational pull.
2. Distance: The farther apart the objects are, the weaker the gravitational force between them. When the distance between two objects increases, the gravitational force decreases. This is because the force of gravity spreads out as the distance increases, resulting in a weaker attraction.
Density, speed, and velocity do not directly affect the gravitational force between two objects. Density refers to the mass per unit volume of an object and is not directly related to the gravitational force. Speed and velocity are terms related to the movement of objects rather than their gravitational interaction.