Haryana PMT Haryana PMT Solved Paper-2004

  • question_answer A truck travelling due north at 20 ms turns west and travels with same speed. What is the change in velocity?

    A) \[20\sqrt{2\,}\,m{{s}^{-1}}\]south-west

    B)  40 ms-1 south-West

    C)  \[20\sqrt{2\,}\,m{{s}^{-1}}\] north-west

    D)  \[40\text{ }m{{s}^{-1}}\] north-west

    Correct Answer: A

    Solution :

                                             Change in velocity\[=\sqrt{{{(20)}^{2}}+{{(20)}^{2}}}=20\sqrt{2}\]along north-east or south-west


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