SECTION A (a) State the conditions for which 2-B is possible (2 marks)
(b) Giyen that A=2i+j. B=i-2; and C=31 -2k, obtain (Ax B C and AxlBxC) (10 marks)
Given that Dr=DF+(Dāxř+2ox DF+wxlāxi), mention the type of acceleration
corresponding to each component of this equation. If is constant what is Do? (8 marks)
dĀ
d
+őx, prove that the angular acceleration is the same in both the stationary and
dA
(d) Given that
dt
de
moving coordinate systems (all parameters retain their usual meanings) (5 marks)​

Wavelength divides in half and speed stays the same.

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero. 

Perhaps seek some professional ? it isn't very asking some children who are just trying to find out answers to homework.also, it seems professional would actually be good to you. obviously it isn't going to magically fix your depression, but it'll do something. drugs, smoking weed, it won't do much, especially if your husband is against it. if you do it he'll dislike it. but talk to him, try and get him to listen to you, and figure everything out together, okay? there's a website- maybe it can offer some ?