a quantity that has magnitude and direction

what is a vector?

a quantity with only magnitude (no direction)

what is a scalar?

an amount; a value with appropriate units

what does “magnitude” mean?

using an angle

How do we represent direction of a 2D vector>

delta R total

If a problem asks for “magnitude of the total 2D displacement” what variable do you find?

theta

If a problem asks for “the direction of the total 2D displacement,” what variable do you find?

the x component of a 2D vector represents how far (and which way) the 2D vector extends on the x axis

what does the x component of a 2D vector represent?

the y component of a 2D vector represents how far (and which way) the 2D vector extends on the y axis

what does the y component of a 2D vector represent?