Answer to Question #307599 in Physics for Chibu

Question #307599

Two bodies of masses 10kg and 4kg are moving in opposite directions with the same velocity of 5 meter per seconds .if they collide and stick together after the impact,calculate their velocity

Expert's answer

The law of conservation of momentum says

m_1v_1+m_2v_2=(m_1+m_2)u

The final velocity

u=\frac{m_1v_1+m_2v_2}{m_1+m_2}

u=\frac{10*5+4*(-5)}{10+4}=2.14\:\rm m/s

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