Vectors

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 

In practice A of the figure, What is  the magnitude of the  resultant displacement?

• 5 km 
• 8 km
• 11 km
• 15 km

Is this a scalar quantity or a vector quantity?
Wind blowing at 20 knots

• Scalar
• Vector

If a car moves 12 km North, 19 km East, and 12 km South, what is its displacement?

• 12 km
• 19 km, East
• 31 km
• 43 km, East

What is the net force?
100 N        230 N
<------        --------->

• 30 N to the right
• 230 N to the right
• 130 N to the right
• This is a balanced force

Find the magnitude.

• 0

• 5

• -5

• 4