Question

do the upward and downward force act on same or different bodies​

Answer 1

Answer:

$Consider a book resting on a table. The weight of the book pushes down on the table with a force mg, while the table pushes up on the book with an equal and opposite force. ... The reason for this is that both forces are acting on the same body, while Newton's Third Law describes two different bodies acting on each other.$

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Answer 2

Answer:

Same bodies and without these forces we cannot stand.