Question

1. how does gravity affect the motion of a free-falling object in a vacuum?

○ gravity causes constant acceleration
○ gravity has no effect
○ gravity depends on weight
○ gravity slows down acceleration

Explanation:

In a vacuum, a free - falling object experiences only the force of gravity. According to the principles of physics, gravity causes a constant acceleration (approximately $g = 9.8\ m/s^{2}$ near the Earth's surface) on the object. The option "Gravity has no effect" is incorrect because gravity is the force that makes the object fall. The option "Gravity depends on weight" is wrong as gravity is the cause of weight (weight $W=mg$), not dependent on it. The option "Gravity slows down acceleration" is also incorrect as gravity is the agent that provides the acceleration for the free - falling object.

Answer:

A. Gravity causes constant acceleration