Two bodies of different masses math xmlns=http://www.w3.org/1998/Math/MathMLmn2/mnmik/mimig/mi/m...

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Two bodies of different masses math xmlns=http://www.w3.org/1998/Math/MathMLmn2/mnmik/mimig/mi/math and math xmlns=http://www.w3.org/1998/Math/MathMLmn4/mnmik/mimig/mi/math are moving with velocities math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn2/mnmo /momi mathvariant=normalm/mimo//momi mathvariant=normals/mi/math and math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn10/mnmo /momi mathvariant=normalm/mimo//momi mathvariant=normals/mi/math towards each other due to mutual gravitational attraction. Then the velocity of the centre of mass is
a. math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn5/mnmsupmrowmo /momims/mi/mrowmrowmo-/momn1/mn/mrow/msup/math
b. math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn6/mnmsupmrowmo /momims/mi/mrowmrowmo-/momn1/mn/mrow/msup/math
c. math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn8/mnmsupmrowmo /momims/mi/mrowmrowmo-/momn1/mn/mrow/msup/math
d. zero
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