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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 boy sitting in a train moving with constant velocity throws a ball straight up into air. Will the ball fall behind him?

The ball is thrown in vertically upward direction and given that the train is moving up with a constant velocity. therefore, the horizontal velocity of the train and ball are both same. And, the ball travels the same horizontal distance as that of the train. 

Therefore, the ball will come back into the hands of thrower. 
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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.
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Give three examples of scalar quantities.

Mass, temperature and energy
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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 vector quantities.

Force, impulse and momentum.
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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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