Vector Representation

Arrows are used to represent

• Vectors

• Scalars

• Speed

• Distance

The way a vector arrow points shows

• Magnitude

• Direction

• Units

• Scale

The length of a vector arrow points shows

• Magnitude

• Direction

• Units

• Scale

Vector diagrams should be drawn

• To scale

• To the actual magnitude of the measurement

• Any length you feel like

• As big as will fit on the paper

Which of this can NOT be represented with a vector diagram?

• Speed

• Velocity

• Displacement

• Acceleration

Which vector represents greater velocity?

• 
• 
• Velocity cannot be represented with a vector diagram

• Cannot be determined without a scale

A car is traveling 30 m/s East. You're asked to draw a vector using the scale 1 cm = 5 m/s. How long and in what direction should you draw the vector?

• 6 cm pointing right

• 6 cm pointing left

• 150 cm pointing right

• 0.167 cm pointing right

You lift a box up with 45 Newtons of force. Given the scale 1 cm = 10 Newtons, how long and in what direction should you draw your vector arrow?

• 4.5 cm pointing up

• 4.5 cm pointing down

• 0.45 cm pointing up

• 450 cm pointing up

You measure the pictured vector and find it is 7.5 cm long. A scale tells you that 1 cm = 5 m/s. What is the actual value of the vector?

• 37.5 m

• 37.5 m/s South

• 37.5 cm

• 37.5 m Soth