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Class 10 Class 12

A particle moves from point (2, 3, 5) to (8, -4, 2) when a force of  unit is applied on it. Find the work done by the force.

Given, a particle moves from point P(2,3,5) to Q(8,-4,2).

Force applied on th particle, F =

Therefore, the displacement undergone by the particle is,

Therefore work done by force is,

J

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Give three examples of vector quantities.

Force, impulse and momentum.
865 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.

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Give three examples of scalar quantities.

Mass, temperature and energy
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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 is a scalar quantity?

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