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8th Class Science Friction Question Bank Friction

  • question_answer
    John carried out an experiment to find out how different surfaces (P, Q, R and S) affect the distance a car travelling at 50 km/h needed to stop once the brakes are applied. The results are shown below:
    Type of road surfaces P Q R S
    Stopping distance(m) 18 15 19 27
    Which type of road will provide the most friction for the car to stop?

    A)  P                                

    B)  Q                    

    C)  R                                

    D)  S

    Correct Answer: B

    Solution :

    The road Q provides the maximum friction, I since the stopping distance for surface Q is the lowest.


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