ï»¿ If the magnitude of the two forces are 2 and 3 and the magnitude of their scalar product is 3, then find the angle between the vectors.Â  from Physics Motion in A Plane Class 11 Manipur Board

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If the magnitude of the two forces are 2 and 3 and the magnitude of their scalar product is 3, then find the angle between the vectors.Â

Here, A = 2; B = 3 and A. B =Â 3,

We know that,Â

A. B = AB cosÂ Â

So, cosÂ =Â Â = cos 45o.Â

That isÂ Â Â  = 45o, is the angle between the vectors.Â

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Give three examples of vector quantities.

Force, impulse and momentum.
865 Views

What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
1212 Views

What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
835 Views

What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors.Â

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Give three examples of scalar quantities.

Mass, temperature and energy
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