Chapter 12 Vectors - Year 2 Flashcards
1
Q
The reason why the distance between 2 points is that way is:?
A
Because you are finding the vector AB (so the difference between)
2
Q
What is a unit vector?
A
Divide by the modulus
3
Q
What is the easiest way to find angels?
A
Dot product
4
Q
What may you to use/keep in mind always?
A
You can always use trig stuff eg cosine rule and area of a triangle
5
Q
How do you do geometric problems?
A
Draw them out and think (use trig if needed)
6
Q
What does bisect mean?
A
Split it into 2 halfs
7
Q
How do you do the hard geometric problem in vectors?
A
You find the point OX in 2 different ways and show that a and b are both 1/2
8
Q
Is resultant force scalar or vector?
A
Vector
9
Q
What is important to keep in mind in vectors?
A
The difference between direction vectors or position vectors
