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1. ### Vectors dot product and cross product help

Where does the ex and ey come from?
2. ### Vectors dot product and cross product help

Homework Statement Vectors A and B (both with the lines over it) lie in an xy plane. Vector A has magnitude 8 and angle 130 degrees, Vector B has components Bx=-7.72 and By=-9.2. a)What is 5(vector A) dot vector B? b)What is 4(Vector A) cross 3(vector B) in unit vector notation and magnitude...
3. ### Mechanics/Calculus question phrasing help

Hi issac, I know how to manipulate the equations and such, my main problem is that I don't know what the question itself is asking. Like am I supposed to find a= through the 2 equations?
4. ### Mechanics/Calculus question phrasing help

Homework Statement Derive the kinematic equations for constant a from change in x=V(avg)Xt & change in v= a(avg)Xt Homework Equations v=v(o)+at (Every other equation that can be made from x=x(1)+V(0)t+.5at^2) x= position a=acceleration (constant) v=velocity t=time The Attempt...