Two particles of masses m_1, m_2 move with initial velocities u_1 and u_2. On collision , one of the particles get excited to higher level , after absorbing energy epsilon. If final velocities of particles be v_1 and v_2 then we must have

Two particles of masses m_1, m_2 move with initial velocities u_1 and

1.	Two particles of masses m_1, m_2 move with initial velocities u_1 and u_2. On collision , one of the particles get excited to higher level , after absorbing energy epsilon. If final velocities of particles be v_1 and v_2 then we must have
Answer» `1/2 m_1 u_1^2 + 1/2 m_2u_2^2 - EPSILON = 1/2 m_1v_1^2 + 1/2 m_2v_2^2` `1/2 m_^21 u_1^2 + 1/2 m_2^2u_2^2 - epsilon = 1/2 m_1^2 v_1^2 + 1/2 m_2^2v_2^2` `m_1^2 u_1 + m_2^2 u_2 - epsilon = m_1^2 v_1 + m_2^2 v_2` `1/2 m_1 u_1^2 + 1/2 m_2u_2^2 = 1/2 m_1 v_1^2 + 1/2 m_2v_2^2 - epsilon` ANSWER :A