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Class 10 Class 12
A balloon is ascending at the rate of 20 m/sec. When it is at a height 100 m from ground, a packet is dropped from the balloon.
What will be the velocity of the packet w.r.t.
(i) ground

(ii) balloon, when it was just dropped?

Speed at which the balloon is ascending, v = 20 m/s

Height of balloon from the ground = 100 m

With respect to ground, the velocity of the packet will be 20 m/sec upward.

With respect to balloon, its velocity will be zero.

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Give three examples of vector quantities.

Force, impulse and momentum.
865 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

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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Give three examples of scalar quantities.

Mass, temperature and energy
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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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