A 4 kg ball is traveling to the right at 2 m/s. A 6 kg ball is traveling to the left at 4 m/s. . If the velocity of the 6 kg ball is 0.8 m/s to the left after the collision, what is the velocity of the 4 kg ball after the collision?

Astronomers studying the planet of rhombus have detected sedimentary rock on its surface. one astronomer wonders if material in this sedimentary rock used to be in igneous rock deep in rhombus’s interior. can igneous rock become sedimentary rock? explain your answer.