A particle has an initial velocity of  and an acceleration of It speed after 10 s from Physics Motion in A Plane Class 11 Manipur Board
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Motion in A Plane

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Physics Part I

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Physics

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A particle has an initial velocity of 3 space stack straight i space with hat on top plus space 4 space stack straight j space with hat on top and an acceleration of It speed 0.4 space stack straight i space with hat on top plus space 0.3 space stack straight j space with hat on topafter 10 s

  • 10 units

  • 7 space square root of 2
  • 7 units

  • 8.5 units


B.

7 space square root of 2
straight V with rightwards arrow on top space equals straight u with rightwards arrow on top space plus straight a with rightwards arrow on top straight t
straight V with rightwards arrow on top space space equals space left parenthesis 3 straight i with hat on top space plus 4 space straight j with hat on top right parenthesis space plus space 10 left parenthesis 0.4 space straight i with hat on top space plus 0.3 space straight j with hat on top right parenthesis
straight V with rightwards arrow on top space equals 7 space straight i with hat on top space plus 7 straight j with hat on top space
rightwards double arrow space vertical line straight V with rightwards arrow on top vertical line space equals space 7 square root of 2
straight V with rightwards arrow on top space equals straight u with rightwards arrow on top space plus straight a with rightwards arrow on top straight t
straight V with rightwards arrow on top space space equals space left parenthesis 3 straight i with hat on top space plus 4 space straight j with hat on top right parenthesis space plus space 10 left parenthesis 0.4 space straight i with hat on top space plus 0.3 space straight j with hat on top right parenthesis
straight V with rightwards arrow on top space equals 7 space straight i with hat on top space plus 7 straight j with hat on top space
rightwards double arrow space vertical line straight V with rightwards arrow on top vertical line space equals space 7 square root of 2
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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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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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