A projectile can have the same range R for two angles of projection. If t1 and t2 be the times of flights in the two cases, then the product of the two time of flights is proportional to from Physics Motion in A Plane Class 11 Manipur Board
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Physics Part I

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A projectile can have the same range R for two angles of projection. If t1 and t2 be the times of flights in the two cases, then the product of the two time of flights is proportional to

  • R2

  • 1/R2

  • 1/R

  • R


D.

R

straight t subscript 1 straight t subscript 2 space equals space fraction numerator 2 straight u squared sin space 2 straight theta over denominator straight g squared end fraction space equals space fraction numerator 2 straight R over denominator straight g end fraction
straight t subscript 1 straight t subscript 2 space equals space fraction numerator 2 straight u squared sin space 2 straight theta over denominator straight g squared end fraction space equals space fraction numerator 2 straight R over denominator straight g end fraction
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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 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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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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