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A force produces acceleration 1 , 1/2 , ...

A force produces acceleration `1 , 1/2 , 1/3,1/4 , ......... ("all in m/ s"^(2))`, applied separetly to n bodies. If these bodies are combined to form single one, then the acceleration of the system will be, if same force is taken into account.

A

`"n"/2`

B

`2/("n"("n"+1))`

C

`("n"^(2))/2`

D

`("n"^(2)("n"+1))/2`

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