Two bodies of mass 1 kg and 3 kg have po...

Two bodies of mass `1 kg` and `3 kg` have position vectors `hat i+ 2 hat j + hat k` and `- 3 hat i- 2 hat j+ hat k`, respectively. The centre of mass of this system has a position vector.

`-2 hat(i)+2hat(k)`

`-2hat(i)-hat(j)+hat(k)`

`2hat(i)-hat(j)-2hat(k)`

`-hat(i)+hat(j)+hat(k)`

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