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## Homework Statement

I cannot understand what is written in my textbook.

## Homework Equations

i.e:

1 J = 1 N m (I get that) ..............................(1)

= 1 Kg m s

^{-2}x m ...................(2)

= 1 Kg m

^{2}s

^{-2}........(3)

## The Attempt at a Solution

If I push a 1 Kg mass (in space) at an acceleration of 9.8 m s

^{-2)}then the Force will be 1 N. And if I push the mass 1 m, that is 1 N m of work done.

What are expressions (2) and (3) saying?

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