The ball m₁ has mass 0.1 kg and m₂ has 1000 kg as shown in the figure below w/ initial speed as v₁ = 3v₂. They collide elastically. Since the m₂ has much larger mass than m₁, we can make assumption that the velocity of m₂ does not change. What is the velocity (v₁') of m₁ after the collision in terms of v₂?

S 2 D my m 2