Cie igcse exams feb/march 2019

I meant like the theory parts and maybe the lens question and stuff like that ... just tell me what u wrote in theory questions ur not sure about.. thank you

An object of mass 3.0 kg, travelling at a speed of 6.0 m / s, collides with an object of mass 2.0 kg,
travelling in the opposite direction at a speed of 2.0 m / s. The objects stick together during the collision.
What is the speed and direction of the combined mass after the collision? The answer is weird in the MS....

An object of mass 3.0 kg, travelling at a speed of 6.0 m / s, collides with an object of mass 2.0 kg,
travelling in the opposite direction at a speed of 2.0 m / s. The objects stick together during the collision.
What is the speed and direction of the combined mass after the collision? The answer is weird in the MS....