excuse me I asked a lot of questions and I won't answer it but I just keep quiet this is not unfair have asked more than many questions that answered especially physics questions don't answer but ask her some questions answered my mind don't answer them even helping people to answer their questions but no responsea body of mass 8 kg moving with a velocity of 20 m shock as collides with another body of mass 4 kg moving with a velocity of 10 m per second in the same direction the velocity of 8 kg body is reduced to 15 m per second after collision calculate the final velocity of kg body ​