A 10-kg green ball and a 2-kg purple ball collide. Before the collision, the green ball's...

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A 10-kg green ball and a 2-kg purple ball collide. Before the collision, the green ball's velocity is +2.0 m/s, and the purple ball's is -4.0 m/s. After the collision, the purple ball's velocity is +4.0 m/s. What is the velocity of the green ball after the collision? Note that you CANNOT assume the collision is perfectly elastic. 10 kg Before Collision 2 m/s 4 m/s 2 kg After Collision 2 kg 10 kg 4 m/s A 10-kg green ball and a 2-kg purple ball collide. Before the collision, the green ball's velocity is +2.0 m/s, and the purple ball's is -4.0 m/s. After the collision, the purple ball's velocity is +4.0 m/s. What is the velocity of the green ball after the collision? Note that you CANNOT assume the collision is perfectly elastic. 10 kg Before Collision 2 m/s 4 m/s 2 kg After Collision 2 kg 10 kg 4 m/s