As the momentum before the 'collision' is zero, the momentum after the collision is zero. In physics, this type of event is termed an explosion. Watch this video for a practical demonstration of ...

This is shown in the diagram below. After the collision, the blue ball travels from left to right at 0.18 ms-1. a) Calculate the velocity of the red ball after the collision. b) Use kinetic energy ...

As a result, controlling the collisions becomes difficult. At least that is what has been thought so far. Prof. Tomza's research group from the Faculty of Physics of the University of Warsaw ...