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9th Class Science Force and laws of motion Question Bank Force And Laws Of Motion Conceptive Objective Problems

  • question_answer
    Two bodies in contact and if the contact is frictionless the contact force is _____ to the common surface and is known as ____

    A)  Parallel, frictional force

    B)  Perpendicular, frictional force

    C)  Perpendicular force, normal force

    D)  Parallel, normal force

    Correct Answer: C

    Solution :

      Two bodies in contact and if the contact is frictionless the contact force is perpendicular to the common surface and is known as normal force.


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