2D motion

Which statement describes a vector?

• It has magnitude but no direction
• It has direction but no magnitude
• It has both direction and magnitude
• It has constant magnitude but no
   direction

The _______ of two or more vectors is the sum of the vectors.

• components
• scalar
• resultant
• magnitude

A car moved 60 km East, then 90 km East. What is the displacement it traveled?

• 30 km, West
• 60 km. East
• 150 km West
• 150 km East

What is the total displacement?
100 m/s        230 m/s
<------        --------->

• 30 m/s to the right
• 230 m/s to the right
• 130 m/s to the right
• This is a balanced force

In practice A of the figure, what is the direction of the resultant displacement?

• 63 degrees, South of East
• 63 degrees, North of West
• 27 degrees, North of West
• 27 degrees, South of West

Find the length of the missing side. 

• 17 cm
• 22 cm
• 15 cm
• 13 cm

In practice B of the figure, which displacement is the vertical component? 

• 40 km, South
• 40 km, North
• 30 km, East
• 30 km, West

In practice B of the figure, which displacement is the horizontal component?

• 30 km, East
• 30 km, West
• 40 km, North
• 40 km, South

Starting from rest, a freely-falling object will fall, in 10 seconds, a distance of about.

• 10 m.

• 50 m.

• 100 m.

• 500 m.

• more than 500 m.

Tags

NGSS.HS-PS2-4

You move 26 m at an angle of 40.0º W of S.  (a) How far south of your starting point are you?  (b) How far west are you?

• a. 19.9 m S
  b. 16.7 m W
• a. 16.7 m S
  b. 19.9 m W
• a. 26 m S
  b. 0 m W
• a. 0 m S
  b. 26 m W