Talk:Accelerator/@comment-117.103.174.250-20160625100847

i want to ask, what accelerator felt down in the floor. and underneath accelerator there is a knife. and accelerator felt down to the knife. since the knife didn't move so there is no vector and accelerator felt down. nah, if this happened, accelerator reflection work if there is vector coming toward him but in this case accelerator which fall to the knife. so how the refletion work in this case(since the knive didn't move, no vector). did accelerator reflection still working?