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  3. 9th Class
  4. Science

9th Class Science Sample Paper Science Sample Paper-3

  • question_answer
    A motor car is moving with a velocity of 20 m/s and it takes 2s to stop after applying the brake. Calculate the force exerted by the brakes on the motor car if its mass along with the passenger is 500 kg.

    A) 500 N   

    B) 5,000 N

    C) 1,000 N

    D) 100 N

    E) None of these

    Correct Answer: B

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