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Motion in A Plane

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Physics Part I

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Physics

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Class 10 Class 12

The distance travelled by a particle starting from rest and moving with an acceleration 4/3 ms-2 in the third second is

  • 6 m

  • 4 m

  • 10/3

  • 19/3


C.

10/3

Distance travelled by  the particle in nth second

straight S subscript straight n to the power of th end subscript space equals space straight u space plus 1 half space straight a space left parenthesis 2 straight n minus 1 right parenthesis
Where u is initial speed and a is an acceleration of the particle. 

Here, n = 3, u =0, a = 4/3 m/s2

straight S subscript 3 rd end subscript space space equals space 0 space plus space 1 half space straight x 4 over 3 space straight x space left parenthesis 2 space straight x space 3 minus 1 right parenthesis
space equals space 4 over 6 space straight x space 5 space equals space 10 over 3 space straight m

Distance travelled by  the particle in nth second

straight S subscript straight n to the power of th end subscript space equals space straight u space plus 1 half space straight a space left parenthesis 2 straight n minus 1 right parenthesis
Where u is initial speed and a is an acceleration of the particle. 

Here, n = 3, u =0, a = 4/3 m/s2

straight S subscript 3 rd end subscript space space equals space 0 space plus space 1 half space straight x 4 over 3 space straight x space left parenthesis 2 space straight x space 3 minus 1 right parenthesis
space equals space 4 over 6 space straight x space 5 space equals space 10 over 3 space straight m

521 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 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

Give three examples of vector quantities.

Force, impulse and momentum.
865 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 scalar quantities.

Mass, temperature and energy
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