An object of 2.3 kg traveling at 6.1 m/s collides head-on with an object of 3.5 kg traveling in the opposite direction at 4.8 m/s. When the collision is perfectly elastic, find out the final speed of the object of 2.3 kg?
i) 3.8 m/s
ii) 4.3 m/s
iii) 0.48 m/s
iv) 6.6 m/s
v) 7.1 m/s