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## Main Question or Discussion Point

Work done= force.displacement

In space, with no external forces, air drag, gravity etc if you apply a force to object if will move forever in the direction of force unless any resultant force act on it to change its momentum.

In this case lets take force as 2N so we get

w.d=2N.s

s will increase forever so w.d is infinite?

I know i am wrong so please help me get the concept right.

In space, with no external forces, air drag, gravity etc if you apply a force to object if will move forever in the direction of force unless any resultant force act on it to change its momentum.

In this case lets take force as 2N so we get

w.d=2N.s

s will increase forever so w.d is infinite?

I know i am wrong so please help me get the concept right.