Kinda need with this one

 A runner accelerates at a rate of 0.5 for 20 s, what is the runner's change in velocity? 

a =

v = 

t = 

Show the planes ( 1 -1 -2 ) and ( 2 0 -3 ) in simple cubiccrystal.

Its a miller indices question..



what i wanted to know was how to represent them in a 3D drawing.because ive been told that representing negative indices are a bittricky. Could u please draw them( for one set of miller indices theintercepts need to be within ONE cube.)”

The question that I have is a Physical Science question,and I wanted to know what the word is for a measurement sign that kinda looks like a cursive p ,and a cursive u put together, but without a circle on top. I can't of any other way to explain better. Please answer my question, because I don't have a clue of what sign this is.