Magnitude and Direction of Vectors

Given an initial point A ( 2, 4 ) and terminal point B ( -8, 7 ), find the component form of the vector AB.

• 〈-10,3〉

• 〈-6,3〉

• 〈10,11〉

• 〈-6,-3〉

Given an initial point R ( -12, 4 ) and terminal point S ( 28, -17 ), find the component form of the vector RS. Hint: get it into the pointy brackets.

• 〈14,-13〉

• 〈-14,13〉

• 〈-40,-21〉

• 〈40,-21〉

Calculate the horizontal component of the velocity

• 69 m/s

• 20 m/s

• 35 m/s

• 23 m/s

Find the vertical component of its velocity

• 52 m/s

• 30 m/s

• 35 m/s

• 9 m/s

Which are equivalent vectors?

• u and -u

• u and a

• u and v

• u and b

Which statement describes a vector?

• It has magnitude but no direction

• It has direction but no magnitude

• It has both direction and magnitude

• is it me, or are these all the same?

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

• 5 km 

• 8 km

• 11 km

• 15 km

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

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

• 40 meters, South

• 50 meters, South

• 50 meters, North

• 40 meters, North

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