A Mass M₁ = 2

Multiple Choice

A mass m₁ = 2.5 kg is connected to another mass m₂ = 4.0 kg by a compressed spring.Both masses are at rest on a frictionless surface.When the spring is released,the masses are pushed apart and a total energy of 16.8 J is given to the two masses.The speed of mass m₁ is

A) 3.2 m/s
B) 2.9 m/s
C) 1.8 m/s
D) 8.3 m/s
E) 5.4 m/s