Quiz 10.2 (1st Period)

Find the magnitude.

• 5

• 3

• 25

• -4

Component Form

• <-3, -7>

• <3, -7>

• <-3, 7>

• <7, 3>

Determine the components of the vector: magnitude= 12 and direction= 125 degrees

• < -9.9, 6.9 >

• < 9.9, -6.9 >

• < -6.9, 9.8 >

• < 6.9, -9.8 >

Determine the direction of <8, -2>

• 346 degrees

• 14 degrees

• 166 degrees

• 194 degrees

A car travels 90 meters due north in 15 seconds. Then the car turns around and travels 40 meters due south.  What is the magnitude and direction  of the car's resultant displacement?  

• 40 metres, South
• 50 metres, South
• 50 metres, North
• 40 metres, North 

A hiker walks 5 kilometers due north and then 7 kilometers due east. What is the magnitude of the resultant vector?

• 2 km
• 8.6 km
• 12 km
• 12.6 km

Find the direction of vector <0, 4>.

• 180⁰
• 90⁰
• 270⁰
• 0⁰

If y = <2, 0> and
z = <-1, -4>, find 3y - 2z.

• <5, -8>
• <4, 8>
• <8, 8>
• <-8, -8>