What is the meaning of free fall
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Answer:
free fall is defined as the motion of an object where gravity is the only force acting upon it. ... Because the gravity of earth is the only force acting upon the moon.
Step-by-step explanation:
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Step-by-step explanation:
The world as we know is largely known through senses and the sense of sight is one of the most important senses. It is only when the light from an object enters our eyes that we see it. The light might have been either emitted by the object or reflected by it. Some of the important terminologies related to light are:
Light is the energy that enables us to see. Light is emitted from a source such as the Sun. The word usually refers to visible light, which is visible to the human eye and is responsible for the sense of sight.The ray of light that strikes a reflecting surface is called as the incident ray and the ray that gets reflected back is called the reflected ray.
The imaginary line that is perpendicular to the reflecting surface is called the normal.
The angle of incidence ∠i is the angle between the incident ray and the normal. The angle of reflection ∠r is the angle between the reflected ray and the normal.
Laws of Reflection: Angle of incidence ∠i is always equal to the Angle of reflection ∠r (∠i=∠r). The angle of incidence, the angle of reflection and the normal all lie on the same plane.