2. Questions Bank
  3. 9th Class
  4. Science
  5. Force and laws of motion

9th Class Science Force and laws of motion Question Bank Force and Laws of Motion

  • question_answer
    A force of \[100\,\,N\] acts on a body of mass \[2\,\,kg\] for\[10\,\,s\]. Find the change in the velocity of the body.

    A) \[100\,\,m\,\,{{s}^{-1}}\]         

    B)        \[250\,\,m\,\,{{s}^{-1}}\]

    C) \[500\,\,m\,\,{{s}^{-1}}\]           

    D)        \[1000\,\,m\,\,{{s}^{-1}}\]

    Correct Answer: C

    Solution :

     \[F=\frac{m(v-u)}{t}\] \[100=\frac{2\times (v-u)}{10}(v-u)=500\,\,m\,\,{{s}^{-1}}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner