The positon of center of mass can be written in the vector form as

1.	The positon of center of mass can be written in the vector form as
Answer» `SUM m_(i) VEC r_(i)` `sum m_(i) vec r_(i)^(2)` `(sum m_(i) vecr_(i))/(M)` `(sum m_(i) vecr_(i)^(2))/(M)` ANSWER :C

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