It is the acceleration of an object in free fall
Explanation:
When an object is in free fall, it is subjected only to one force: the force of gravity, which pulls the object downward, with a magnitude (near the Earth's surface) which is given by
[tex]F=mg[/tex]
where
m is the mass of the object
[tex]g=9.8 m/s^2[/tex] is the acceleration due to gravity
We can apply Newton's second law to the object in free fall:
[tex]F=ma[/tex]
where
F is the net force on the object
a is the acceleration of the object
m is the mass
However, since there is only the force of gravity acting on the object, the net force is equal to the force of gravity: so we can equate the two equations, obtaining that
[tex]mg = ma\\\rightarrow a = g[/tex]
Which means that the acceleration of an object in free fall (acted upon the force of gravity only) is equal to the acceleration due to gravity, [tex]g=9.8 m/s^2[/tex].
Learn more about gravity:
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