Period 5: New Forces In 2D Practice Test

18 Questions | By Storyphysics | Updated: Mar 18, 2022 | Attempts: 121

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1.

Find the magnitude of the resultant vector.
- A.
  
  54.7 N
- B.
  
  36.0 N
- C.
  
  24.7 N
- D.
  
  26.7
2.

Find the vertical component of this vector.
- A.
  
  35 N
- B.
  
  17.6 N
- C.
  
  24.7 N
- D.
  
  32.6 N
3.

Find the horizontal component of this vector.
- A.
  
  35 N
- B.
  
  17.6 N
- C.
  
  24.7 N
- D.
  
  32.6 N
4.

What is the horizontal component of this vector?
- A.
  
  68.8 N
- B.
  
  102.6 N
- C.
  
  98.3 N
- D.
  
  77.8 N
5.

What is the vertical component of this vector?
- A.
  
  68.8 N
- B.
  
  102.6 N
- C.
  
  98.3 N
- D.
  
  77.8 N
6.

Your mom tries to drag you out of bed. She pulls you by your feet with a force of 100 N at an angle of 22 degrees. How much of this force is pulling you forward (horizontally)?
- A.
  
  75.1 N
- B.
  
  87.9 N
- C.
  
  37.5 N
- D.
  
  92.7 N
7.

A child drags her backpack across the floor, pulling it with a force of 22 N with an angle of 60 degrees to the floor. Find the horizontal and vertical components of this force.
- A.
  
  Horizontal= 19 N, vertical = 11 N
- B.
  
  Horizontal = 11 N, vertical = 19 N
- C.
  
  Horizontal = 38 N, vertical =17 N
- D.
  
  Horizontal=17 N, vertical = 38 N
- E.
  
  Horizontal = 8 N, vertical= 21 N
- F.
  
  Horizontal =21 N, vertical=8 N
8.

What is the tension in the rope on the right?
- A.
  
  15.7 N
- B.
  
  24.5 N
- C.
  
  49 N
- D.
  
  38 N
9.

What is the tension in the rope on the left?
- A.
  
  58 N
- B.
  
  24.5 N
- C.
  
  15.7 N
- D.
  
  62 N
10.

What is the weight of the object?
- A.
  
  25.3 N
- B.
  
  120 N
- C.
  
  50.7 N
- D.
  
  45.7
11.

What is the weight of the object?
- A.
  
  18.1 N
- B.
  
  11.6 N
- C.
  
  5.8 N
- D.
  
  22.6 N
12.

What is the magnitude of the resultant vector?
- A.
  
  2100 N at 70.9 degrees
- B.
  
  45.8 N at 70.9 degrees
- C.
  
  45.8 N at 60 degres
- D.
  
  63.4 N at 54.6 degrees
- E.
  
  63.4 N at 70.9 degrees
13.

What is the resultant force of these two vectors?
- A.
  
  83.9 N at 66 degrees
- B.
  
  56.7 N at 25 degrees
- C.
  
  65.8 at 55 degrees
- D.
  
  75 N at 46 degrees
14.

What is the horizontal and vertical components of this vector?
- A.
  
  Horizontal: -27.2 N, Vertical: 12.7 N
- B.
  
  Horizontal: -12.7, Vertical 27.2
- C.
  
  Horizontal: 33.1, Vertical 70.9 N
- D.
  
  Horizontal: 27.2 N Vertical 12.7 N
- E.
  
  Horizontal: -18.6 N Vertical: 15.4 N
- F.
  
  Horizontal 18.6 N Vertical 15.4 N
15.

What is the net force acting on this object?
- A.
  
  55.6 N at 54 degrees
- B.
  
  79.8 at 50 degrees
- C.
  
  68.6 N at 62.8 degrees
- D.
  
  85.7 at 77.6 degrees
16.

A backpack has a mass of 15 kg. It is hanging from two ropes. The two ropes are perfectly vertical- they point straight up and down. What is the tension in each rope?
- A.
  
  15 N
- B.
  
  7.5 N
- C.
  
  147 N
- D.
  
  73.5 N
17.

If you add these two vectors:
- A.
  
  The net force is 14 N and points toward the lower right of this screen
- B.
  
  The net force is 10 N and points toward the upper left of this screen
- C.
  
  The net force is 14 N and points toward the upper left of this screen
- D.
  
  The net force is 10 N and points toward the lower right of this screen
18.

If you were to add these two forces, the resultant force is:
- A.
  
  55 N and points toward the upper left of this page
- B.
  
  55 N and points toward the bottom right of this page
- C.
  
  41.2 N and points toward the upper left of this page
- D.
  
  41.2 N and points toward the bottom right of this page