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Class 10 Class 12
Two bodies A and B are approaching towards each other with speed 10 m/s and 54 km/hr. If the direction of motion of A is taken positive, then what is the relative velocity of B w.r.t. A?

Here,

∴

Relative velocity is given by,

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Give three examples of scalar quantities.

Mass, temperature and energy
769 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

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.
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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.

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