General
Easy
Physics-

A particle starts from rest at t equals 0 and undergoes an acceleration a in m s to the power of negative 2 end exponent with time t in seconds which is as shown Which one of the following plot represents velocity V in m s to the power of negative 1 end exponent versus time t in seconds

Physics-General

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    Answer:The correct answer is:
    Takingthe motion from 0 to 2 blank s
    u equals 0 comma blank a equals 3 m s to the power of negative 2 end exponent comma blank t equals 2 s comma blank v equals ?
    v equals u plus a t equals 0 plus 3 cross times 2 equals 6 m s to the power of negative 1 end exponent
    Taking the motion from 2 blank s to 4 blank s
    v equals 6 plus open parentheses negative 3 close parentheses open parentheses 2 close parentheses equals 0 m s to the power of negative 1 end exponent

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    physics-General
    Displacement = Summation of all the area with sign
    equals open parentheses A subscript 1 end subscript close parentheses plus open parentheses negative A subscript 2 end subscript close parentheses plus open parentheses A subscript 3 end subscript close parentheses equals open parentheses 2 cross times 4 close parentheses plus open parentheses negative 2 cross times 2 close parentheses plus open parentheses 2 cross times 2 close parentheses

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    equals open vertical bar A subscript 1 end subscript close vertical bar plus open vertical bar negative A subscript 2 end subscript close vertical bar plus open vertical bar A subscript 3 end subscript close vertical bar equals open vertical bar 8 close vertical bar plus open vertical bar negative 4 close vertical bar plus open vertical bar 4 close vertical bar equals 8 plus 4 plus 4
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    Assertion : Owls can move freely during night.
    Reason : They have large number of rods on their retina.

    physics-General
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    A particle shows distance-time curve as given in this figure. The maximum instantaneous velocity of the particle is around the point

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    A particle shows distance-time curve as given in this figure. The maximum instantaneous velocity of the particle is around the point

    physics-General
    Instantaneous velocity is given by the slope of the curve at that instant v equals fraction numerator d s over denominator d t end fraction equals tan invisible function application theta from the figure it is clear that slope of the curve is maximum at point ‘C
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    A particle shows distance-time curve as given in this figure. The maximum instantaneous velocity of the particle is around the point

    Instantaneous velocity is given by the slope of the curve at that instant v equals fraction numerator d s over denominator d t end fraction equals tan invisible function application theta from the figure it is clear that slope of the curve is maximum at point ‘C

    A particle shows distance-time curve as given in this figure. The maximum instantaneous velocity of the particle is around the point

    physics-General
    Instantaneous velocity is given by the slope of the curve at that instant v equals fraction numerator d s over denominator d t end fraction equals tan invisible function application theta from the figure it is clear that slope of the curve is maximum at point ‘C