Two Objects collide head on, both with speeds of 10 m/s. Both projects emerge from the collision traveling in the same direction, each having at a speed 10m/s. How does this violate the conservation of momentum? The answer is: That it only violates the conservation of momentum. Why? I answered it as violating both conservation laws (momentum and energy), because I thought any force that was applied on one twice is applied on the other. And also because both objects would not emerge from the direction because they are both traveling at the same speed.