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Force and Pressure Test - 6

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Force and Pressure Test - 6
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  • Question 1
    1 / -0

    A force can be

    Solution

    Force is a push or a pull of an object that causes the object to speed up, slow down, or stay in one place. In other words, a force is what causes an object to move. Friction and gravity are two types of forces that influence how an object moves.

     

  • Question 2
    1 / -0

    Force can affect the state of motion of a body by

    Solution

    Force can affect the state of motion of a body by both increasing speed and changing direction of speed.

     

  • Question 3
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    Force exerted during digestion of food in alimentary canal is:

    Solution

    Force exerted during digestion of food in alimentary canal is the muscular force. It is a contact force which acts on the food that needs to be digested.

     

  • Question 4
    1 / -0

    A force that opposes the motion of one surface sliding over other is called:

    Solution

    Friction is an opposing force that opposes the motion of one body over the surface of another body.

    Like in case of a ball freely rolling on the ground, the ball eventually comes to stop, because of the force of friction that acts between the ball and the ground.

  • Question 5
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    When a charged balloon attaches to wall without any help ____ force is in action.

    Solution

    Electrostatic force is the force that exists between electrically charged particles or objects at rest.

    Electrostatic forces are non-contact forces; they pull or push on objects without touching them.

    Rubbing some materials together can result in something called 'charge' being moved from one surface to the other.

    Charged objects pull on other uncharged objects and may either push or pull on other charged objects.

     

  • Question 6
    1 / -0

    Drawing a bucket of water is an act of

    Solution

    When we draw a bucket of water, we pull the bucket upwards. Therefore, drawing a bucket of water is an act of pulling. Hence, D is the correct answer.

     

  • Question 7
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    The strength of the force is usually measured by its _________

    Solution

    The strength of a force is usually expressed by its magnitude. Hence, B is the correct answer.

     

  • Question 8
    1 / -0

    Which of the following is necessary for a force?

    Solution

    At least two objects must interact for a force to come into play. Thus, an interaction of one object with another object results in a force between the two objects.

    Hence, B is the correct answer.

     

  • Question 9
    1 / -0

    If two persons apply the same force ‘F’ on pushing an object. Then, the total force acting on the object when they are pushing in the opposite direction is

    Solution

    If the two forces act in opposite directions on an object, the net force acting on it is the difference between the two forces.

    Therefore, net force = F – F = 0

    Hence, A is the correct answer.

     

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