Posted by Melinda on Monday, March 26, 2012 at 10:53pm.
Please help/verify the answer.
1. When you add vectors geometrically:
a) vectors are aligned tail to tail
b) vectors are aligned head to head
c) vectors are aligned head to tail
d) vectors are put side by side
Is the answer D?

2. Adding a vector to the zero vector:
a) produces zero vector
b) preserves the nonzero vector
c) changes the vector's direction
d) reduces the vector's magnitude
Answer is B?

3. If A⃗ is any nonzero vector, a unit vector in the same direction of A⃗ would be:
a) A⃗A⃗
b) (1/A⃗) A⃗
c) (1/A⃗) A⃗
d) A⃗A⃗
Answer is A?

Calculus and vectors  drwls, Tuesday, March 27, 2012 at 7:00am
1c, 2b, 3b
You got one out of three. Were you just guessing?