It collides with truck B of mass 1 tonne, which is moving on the same rails.
BBC: Colleges despair at exam board 'error'
Small start-ups are demonstrating what can happen to an ecosystem when it collides with new user behaviors.
FORBES: The Value Of An 'Outside-In' Strategy
"It's a subtropical air mass, " Pedram Javaheri, and can spark thunderstorms as it collides with a cooler front coming over from Texas.
CNN: More rain for flooded parts of Louisiana
That could indicate the presence of dark matter, which is believed to generate the antimatter particles when it collides and annihilates itself.
ENGADGET
Where the Pacific plate collides with the Indo-Australian plate, it is forced downwards into the trench, a subduction zone, and the volcanoes are carried with it.
BBC: Undersea mountains march into the abyss
This says that the exploding material (whatever it may be) races outwards and collides with interstellar dust and gas, producing radiation.
ECONOMIST: A symphony in gamma major
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