Two objects, mass of an object is 3 kg which is moving with a speed of 2m/s and the mass of other is 5 kg and speed is 2m/s, move toward each other and collide head-on. If the collision is perfectly inelastic, find the speed of the objects after the collision.

A 0.25m/s

B 0.5 m/s

C 0.75 m/s