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

  • question_answer
    Which of the following safety features are used in vehicles to reduce the negative effects of inertia?
    (i) Safety seat belts (ii) Automatic air bags (iii) Absorber bumpers

    A)  Only (i) and (ii)

    B)  Only (ii) and (iii)

    C)  Only (i) and (iii)

    D)  (i), (ii) and (iii)  

    Correct Answer: D

    Solution :

     When a vehicle is stopped suddenly the seat belt and the air bags help to overcome the inertia of motion. The absorber bumpers installed at the front and rear of vehicles are made up of rubber-like materials. During a collision the bumpers collapse to increase the time of impact and thereby help to overcome the negative effects of inertia of motion.


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