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Two masses ma and rnb moving with velocitics v
a
and v
b
in opposite direction collide elastically and after the collision m
a
and m
b
move with velocities v
b
and v
a
respectively.
Then the ratio m
a
m
b
is
(A)
\(\frac{v_a-v_b}{v_a+v_b}\)
(B)
\(\frac{m_a+m_b}{m_a}\)
(C) 1
(D)
\(\frac{1}{2}\)