What is meant by gravitational acceleration value of 9.8ms 2 ?

What is meant by gravitational acceleration value of 9.8ms 2 ?
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Answer :

The acceleration that occurs in a freely falling object under the influence of gravity is called gravitational acceleration , which is an excellent natural example of balanced acceleration. The value of gravitational acceleration on the earth's surface is 9.8ms − 2 , the acceleration of any object falling freely on the earth 's surface is 9.8ms − 2 .
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