1.2.2 Intro to Vectors

Scalar

A physical quantity that has magnitude only.

Vector

A quantity that has magnitude and direction

Magnitude

Amount, number value

(X,Y)

Convention for a point on a coordinate plane

Speed, volume, mass, time

Examples of scalar quantities

Velocity, acceleration, force, momentum

Examples of vector quantities

Direction and magnitude

In Despicable Me, Vector chooses his name because he is committing crime with both ....... Oh Yea!

yes

Is an "a" (acceleration) without its arrow symbol still a vector?

arrow over the symbol

Most common symbol that a quantity is a vector

Left, South, West, Down

Negative vector directions

Bottom left

Part of the plane where X and Y are both negative

Top right

Part of the plane where X and Y are both positive

Right, North, East, Up

Positive vector directions

-10m/s

Velocity of an apple falling down at a speed of 10m/s

tail

Where the vector begins

No

Will vectors always have their arrow symbols?

coordinate plane

X and Y axis with + and - quadrants for each

tip or head

arrow side of the vector (where it is pointing)

Direction

the path that a moving object follows (up, down, east, west, left, right etc)

50mph

what is the velocity of a car traveling 50mph to the east?

-50mph

what is the velocity of a car traveling 50mph to the west?