Two particles of masses $M$ and 2 M are moving with speeds of $10 \mathrm {~m} \mathrm {~s} ^ { - 1 }$ and $5 \mathrm {~m} \mathrm {~s} ^ { - 1 }$, as shown in the figure. They collide at the origin and after that they move along the indicated directions with speeds $v _ { 1 }$ and $v _ { 2 }$, respectively. The values of $v _ { 1 }$ and $v _ { 2 }$ are, nearly\\
(1) $6.5 \mathrm {~m} \mathrm {~s} ^ { - 1 }$ and $3.2 \mathrm {~m} \mathrm {~s} ^ { - 1 }$\\
(2) $3.2 \mathrm {~m} \mathrm {~s} ^ { - 1 }$ and $12.6 \mathrm {~m} \mathrm {~s} ^ { - 1 }$\\
(3) $13.02 \mathrm {~m} \mathrm {~s} ^ { - 1 }$ and $19.7 \mathrm {~m} \mathrm {~s} ^ { - 1 }$\\
(4) $3.2 \mathrm {~m} \mathrm {~s} ^ { - 1 }$ and $6.3 \mathrm {~m} \mathrm {~s} ^ { - 1 }$