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

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

  • question_answer
    What will be the percentage change in momentum of a body when both its mass and velocity are doubled?

    A) 400              

    B) 75

    C) 500              

    D) 300

    Correct Answer: D

    Solution :

    [d] % change =\[\frac{\Delta p}{p}\times 100=\frac{4p-p}{p}\times 100=300%\]
                                           (\[\therefore \]2m . 2v =4mv=4p)


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