Vectors RT

A vector in space has

• One component

• Two component

• Three component

• No component

If a vector is divided by its magnitude, we get

• A unit vector

• A null vector

• Position vector

• A free vector

If the resultant of two vectors each of magnitudes F is also of magnitude F, the angle between them will be

• 90⁰

• 60⁰

• 30⁰

• 120⁰

If the resultant of two vectors each of magnitudes F, is twice of magnitude F, the angle between them will be

• 0⁰

• 60⁰

• 90⁰

• 120⁰

If $\left|\overrightarrow{A}+\overrightarrow{B}\right|=\left|\overrightarrow{A}-\overrightarrow{B}\right|$  the angle between the vectors is

•  $0\degree$  

•  $45\degree$  

•  $60\degree$  

•  $90\degree$  

 $\overrightarrow{a}$  

A unit vector 0.6then p is 

•  0

•  1

• 0.5

• -0.5

Two forces of 7N and 3N are acting simultaneously on an object in the same direction. Their resultant is

• Zero

• 4N

• 10N

• 21N

The unit vector parallel to a vector A = 3i + 6j -2k is 

• i + j + k 

•  $3/7i+6/7j-2/7k$  

•  $3/7i+3/7j-4/7k$  

•  $3/49i+6/49j-2/49k$  

What is the resultant force in diagram shown?

• Zero

• 6N to Left

• 6N to Right

• 11N to Right

The vectors which act along axis of rotation are called

• Proper Vectors

• Inertial vectors

• Axial vectors

• Unit vectors