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When a person walls on a rought surface,...

When a person walls on a rought surface, the frictional force exerted by the surface on the person is opposite to the direction of his motion.

Text Solution

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The correct Answer is:
False
Concept : Friction force opposite the relative motion of the surface of contact Where a person walks on a rough surface when be pushes the ground backward ground pushes the person in forward dierection Therefore the friction force will act forward (in the direction of motion of the person).
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When a person walks on a rough surface, the frictional force exerted by the surface on the person is opposite to the direction of his motion.

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following four responses Assertion When a person walks on a rough surface, the net force exerted by surface on the person in the direction of his motion. Reason It is force exerted by the road on the person that causes the motion.

Knowledge Check

  • When a person walks on a rought surface, the frictional force exerted by surface on the porson is opposite to the direction of his motion. It is the force exerted by the road on the person that causes the motion.

    A
    If both Accertion and Reason are true and the reason is correct explanation of the Assertion.
    B
    If both Assertion and Reason are true but reason is not the correct explanation of Assertion.
    C
    If Assertion is true, but the Reason is false.
    D
    If Assertion is false but the Reason is true.

  • When a person walks on a rough surface

    A
    the frictional force exerted by the surface keeps him moving
    B
    reaction of the force applied by the man on the surface keeps him moving
    C
    the force applied by the man keep him moving
    D
    weight of the man keeps him moving

  • Assertion: When a person walks on a rough surface, the frictional force exerted by the surface on the person is opposite to the direction of tendenc of motion his leg. Reason: If a body moves with constant velocity, then it means that body is moving along straight line & there is no acceleration.

    A
    If both assertion `&` Reason are True `&` the Reason is a corrrect explanation of the Asserion.
    B
    If both Assertion `&` Reason are True but Reason is not correct explanation of the Assertion.
    C
    If Assertion is Trie but the Reason is False.
    D
    If both Assertion `&` Reason are false

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