Two blocks of masses m₁ and m₂, resting on frictionless inclined planes, are connected by a massless rope passing over an ideal pulley. Angle φ = 45.0° and angle θ = 36.9°; mass m₁ is 6.00 kg and mass m₂ is 4.00 kg. 

(a) Using energy conservation, find how fast the blocks are moving after they travel 2.00 m along the inclines. 

(b) Now solve the same problem using Newton’s second law.