Recent content by mrssmth

Homework Statement The position of a particle moving along the y-axis has a position given by y = 0.20m + (8.0m/s) t - (10 m/s2) t2. is there any time interval during which the particle is not moving? Homework Equations The Attempt at a Solution I said No but I'm not sure why...

Also for "A+2B = x1j +y1j and 2A-B = x2i + y2j what is A?" I got to this point and then got confused: 3A+B=(x1+x2)i +(y1+y2)j and now i don't know how to get the A all alone

That makes so much more sense! Is this the right answer for "given that A + B =x1i + y1j and A-B = x2i + y2j what is A?" I got A= (x1+x2)/2i +(y1+y2)/2j

i just started physics and i missed the first day. I'm trying to do these vector problems but i can't quite understand it and my book isn't helping. given that A+2B = x1j +y1j and 2A-B = x2i + y2j what is A? given that A + B =x1i + y1j and A-B = x2i + y2j what is A? given that A +B =x1i...