Two bodies of 6 {\kg} and 4 {\kg} masses have their velocity 5 \stackrel{\^}{\bo {i}}-2 \stackrel{\^}{\bo {j}}+10 \stackrel{\^}{\bo {k}} and 10 \stackrel{\^}{\bo {i}}-2 \stackrel{\^}{\bo {j}}+5 \stackrel{\^}{\bo {k}} respectively. Then the velocity of their centre of mass is

Correct Answer is : 7^i−2^j+8^k

5 \stackrel{\^}{\bo {i}}+2 \stackrel{\^}{\bo {j}}-8 \stackrel{\^}{\bo {k}}

7 \stackrel{\^}{\bo {i}}+2 \stackrel{\^}{\bo {j}}-8 \stackrel{\^}{\bo {k}}

7 \stackrel{\^}{\bo {i}}-2 \stackrel{\^}{\bo {j}}+8 \stackrel{\^}{\bo {k}}

5 \stackrel{\^}{\bo {i}}-2 \stackrel{\^}{\bo {j}}+8 \stackrel{\^}{\bo {k}}

EAMCET Engineering 2007 Solved Paper

Section: Physics

Question : 6 of 160

Marks: +1, -0

Two bodies of 6‌kg and 4‌kg masses have their velocity 5

−2

+10

and 10

−2

respectively. Then the velocity of their centre of mass is

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