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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

• zero

C.

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

mv sin θ - (-mv sin θ )

=

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

mv sin θ - (-mv sin θ )

=
259 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 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 is a scalar quantity?

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

Give three examples of vector quantities.

Force, impulse and momentum.
865 Views