Scalars And Vectors

Question 1

Scalar

Answer 1

Only tell us the magnitude of the quantity

Question 2

Vectors

Answer 2

Tell us both the magnitude and the direction of the quantity

Question 3

Adding non-perpendicular vectors methods

Answer 3

Scale diagram
Trig calculations
Vector resolution calculations

Question 4

Scale diagram

Answer 4

Pick a scale
Draw your vectors top to tail
Complete the triangle
Measure the length and angle of the side stating where the angle is from

Question 5

Trigonometric calculations

Answer 5

Cosine rule for side
Sine rule for angle

a^2 = b^2 + c^2 -2bcCosA

SinA/a = SinB/b

Question 6

Subtracting values

Answer 6

Draw both vectors tail to tail stemming from the same point and measure