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Motion in A Plane

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Physics Part I

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Physics

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

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#6 {main}</pre> A swimmer which can swim with velocity straight v subscript 2 relative to water, dives into the river perpendicular to the direction of flow to cross the river. What is the displacement of swimmer when he reaches opposite side of the river?


Width if the river = d km 

Rate of flow of river = v1 m/s

Rate of flow of swimmer = v2 m/s

Given that, the swimmer is diving in a direction perpendicular to the flow of river, to cross the river. 

Therefore, the displacement of the swimmer when he reaches the opposite side of the river is given by, 

                         straight x equals straight d square root of 1 plus straight v subscript 1 squared over straight v subscript 2 squared end root

160 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 scalar quantities.

Mass, temperature and energy
769 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. 


814 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.
1212 Views

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