Vectors B1 Ch11

Question 1

What is the resultant vector of AB+BC?

Answer 1

AB+BC=AC

Question 2

How do you multiply a column vector by a scalar?

Answer 2

Multiply each component by the scalar 5(a)= (5a) (b) (5b)

Question 3

How do you add two column vectors?

Answer 3

Add the x components and the y components (a)+(c)=(a+c) (b)+(d)=(b+d)

Question 4

What is a unit vector?

Answer 4

A vector with length 1

Question 5

Which letters are used in unit vectors?

Answer 5

i for x j for y

Question 6

For the vector a=xi +yj how can the magnitude of the vector be found?

Answer 6

|a|= route(x²+y²)

Question 7

How can you find a unit vector in the direction of a given vector

Answer 7

A unit vector in the direction of a is a/|a|