Which two things affect gravitational force between objects?
A). Mass and distance
B). Mass and cellular composition
C). Mass and shape
D). Distance and shape
A). Mass and distance
The two things that affect gravitational force between objects are:
A). Mass and distance
The correct answer is A) Mass and distance.
To understand why mass and distance affect gravitational force, let's first understand what gravitational force is. Gravitational force is the force of attraction between two objects due to their masses. It is a fundamental force that is responsible for the motion of objects on Earth and the movement of celestial bodies in space.
Now, let's break down each option to understand why the only correct answer is A:
A) Mass and distance: According to Newton's law of universal gravitation, 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. This means that as the mass of an object increases, the gravitational force between it and another object also increases. Similarly, as the distance between two objects increases, the gravitational force between them decreases.
B) Mass and cellular composition: Cellular composition refers to the types of cells in an object, but it does not affect gravitational force. Gravitational force depends on the mass of the objects, not on the cellular composition.
C) Mass and shape: The shape of an object does not affect gravitational force. The magnitude of the gravitational force is only influenced by the masses of the objects and the distance between them.
D) Distance and shape: As mentioned earlier, the shape of an object does not affect gravitational force. The distance between objects does affect gravitational force, as explained by Newton's law of universal gravitation.
In conclusion, the correct answer is A) Mass and distance because they are the two factors that directly influence the gravitational force between objects according to Newton's law of universal gravitation.