A Puck with a Mass M₁ = 50

Multiple Choice

A puck with a mass m₁ = 50.0 g moving at 1.00 m/s approaches a stationary puck with a mass m₂ = 100 g on an air table and they undergo a two-dimensional elastic collision. After the collision, both pucks have identical speeds, but travel in different directions. What is the angle between the original and final paths of m₁?

A) 30.0°
B) 60.0°
C) 90.0°
D) 120°
E) 150°