Two Billiard Balls Are Traveling to the Right with Speeds

Multiple Choice

Two billiard balls are traveling to the right with speeds v₁ = +0.5 m/s and v₂ = +0.3 m/s.If m₁ = 2.5m₂,calculate the velocity of m₁ after it catches up to and impacts m₂.The speed of m₂ after the collision is +0.55 m/s.

A) -0.35 m/s
B) +0.25 m/s
C) +0.75 m/s
D) +0.35 m/s
E) +0.40 m/s