Arun yadav
  • 9

5 kg ki a vashtu 10m/sec ke beg se gatiman hi ese rokne ke liye 20N ka bal lagaya jata hi kar rukne me kitna smay lagega

  • 9

class 9th questions physics lesson 9

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1 Answer

  1. F = ma

    F= 20 N
    m = 5 kg

    इसलिये

    20 = 5 a

    or

    a = 20/5 = 4 m/s^2

    वस्तु के लिए

    u = 10 m/s
    v = 0 m/s
    a = 4 m/s^2

    v = u + at के प्रयोग से

    0 = 10 + 4 t

    or

    t = 10/4 = 2.5 seconds

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