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    Physics-
    General
    Easy

    Question

    The position of a particle at any instant t is given by x equals acos omega t. The speed-time graph of the particle is

    1.  
    2.  
    3.  

    The correct answer is:

      therefore blank x equals acos omega t
      therefore v equals fraction numerator d x over denominator d t end fraction equals negative a omega sin invisible function application omega t
      The instantaneous speed is given by modulus of instantaneous velocity.
      therefore blankspeedequals open vertical bar u close vertical bar equals open vertical bar negative a omega sin invisible function application omega t close vertical bar
      Hence, [c] is correct.

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