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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

A particle of mass is projected with the velocity v making an angle of 45o with the horizontal. 
When the particle  lands on the level ground the magnitude of the change in its momentum will be

  • 2 mv

  • mv divided by square root of 2
  • square root of 2 mv
  • zero


C.

square root of 2 mv

The horizontal momentum does not change. The change in vertical momentum is 

mv sin θ - (-mv sin θ ) 

=2 space mv fraction numerator 1 over denominator square root of 2 end fraction space equals space square root of 2 space mv

The horizontal momentum does not change. The change in vertical momentum is 

mv sin θ - (-mv sin θ ) 

=2 space mv fraction numerator 1 over denominator square root of 2 end fraction space equals space square root of 2 space mv
259 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

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

What is a scalar quantity?

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