What is meant by gravitational acceleration of the moon 1.63ms-2 ?

What is meant by gravitational acceleration of the moon 1.63ms-2 ?
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Answer :

The gravitational acceleration of the moon is 1.63ms-2 . When an object is thrown upwards from the lunar surface, its velocity decreases by 1.63ms-2 per second. That is, the object is attracted to the center of the moon at an acceleration of 1.63ms-2 .
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Related questions

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Description : What is the value of the gravitational constant G ?

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A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of (1) gravitational force between train and man. (2) illusion of the man (3) the centripetal force (4) pressure difference due to fast moving air in between

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