Ch 3

Question 1

Vectors

Answer 1

has (+)magnitude and direction
(displacement is a fixed constant direction is not )

Question 2

Equality of Vectors

Answer 2

if have the same magnitude and direction then they are equal

Question 3

multiplication/ division of vector by a (+)

Answer 3

direction will not change but magnitude will (change in length)

Question 4

multiplication/ division of vector by a (-)

Answer 4

direction will be opposite (flip)

Question 5

ways to add vectors

Answer 5

tip to tail
cummatative

Question 6

subtracting vectors

Answer 6

NOT commutative
order DOES matter

Question 7

motion on a ramp

Answer 7

velocity and acceleration are dependant on the slope

Question 8

Motion in 2D

Answer 8

-velocity vectors (green) point in same direction as displacement (blue)

Question 9

2 ways velocity can change

Answer 9

-change in magnitude
-change in direction

Question 10

complimentary angles in PM?

Answer 10

complimentary angles with same speed = ranges will be the same

45 degrees / same speed will get you the MAX range