Multiple Choice Online Test
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Vectors and Scalars II

1.) Which one of the following represents a scalar quantity?

1 | The change in momentum of a rubber ball bouncing off the floor.
2 | The velocity of an airplane flying at 300 km.h-1 on a bearing 0400.
3 | The speed of a car travelling at 100 km.h-1.
4 | The acceleration of an object thrown vertically upwards and which has reached the highest point of its motion.

2.) An aircraft is flying due West in a cross-wind that blows from north to south. The pilot draws the following vector diagram to establish the aircraft's correct heading.

What is the correct label for the vector marked III in the diagram?

1 | Resultant velocity of aircraft relative to the ground.
2 | Velocity of aircraft relative to the ground.
3 | Velocity of air relative to the ground.
4 | Velocity of aircraft relative to the air.

3.) Which one of the following statements is CORRECT?
The direction of vector AB on the sketch can be written as a bearing of …

1 | 2400
2 | 1200
3 | 2100
4 | 0600

4.) Three forces F1, F2 and F3 act simultaneously on object O, which is in equilibrium.

Which ONE of the following statements is NOT TRUE with reference to the three forces?

1 | The resultant of forces F1, F2 and F3 is zero.
2 | The forces F1, F2 and F3 lie in the same plane.
3 | Force F3 is the resultant of forces F2 and F3.
4 | The sum of the components of all forces in any chosen direction is zero.

5.) Three forces F1, F2 and F3 act simultaneously on object O, which is in equilibrium.

Which one of the following vector diagrams correctly represents the above situation?

1 | A
2 | B
3 | C
4 | D

Questions 6, 7 and 8 refer to the following diagram, showing a number of forces acting on an object.

6.) The resultant of force V and force R is force …

1 | P
2 | Q
3 | S
4 | T

7.) The equilibrant of force V and force S is force …

1 | P
2 | Q
3 | U
4 | T

8.) If force P is 100 N and angle q = 300, than the magnitude of force V is …

1 | 50,0 Newton
2 | 57,7 Newton
3 | 86,6 Newton
4 | 88,9 Newton

9.) Three horizontal forces of equal magnitude act on a box at rest as shown in the diagram.
The box …

1 | accelerates towards the north-east.
2 | accelerates towards the south-east.
3 | accelerates towards the south-west.
4 | does not accelerate.

10.) In which one of the following vector diagrams is the resultant of the three vectors zero?

1 | A
2 | B
3 | C
4 | D

Results

Hint: You can do the test offline as well. Just click "file" from the menu, then "save" to a destination of your choice. But remember to open file either with windows explorer or internet explorer. Netscape might not be able to reload pictures offline.

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