Ali was playing with his new U-shaped magnets which he attached with two trolleys and moved both of the trolleys in the same direction so they can have a collision with each other but he wasn’t successful. The car did not collide and he did not enjoy as he wanted to enjoy the collision between the trolleys. (a). With your understanding on magnetism explain why the trolleys did not collide with each other? b. Suggest what Ali can do to enjoy the collision and why?