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Forces and Laws of Motion Test - 31

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Forces and Laws of Motion Test - 31
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  • Question 1
    1 / -0
    As longer the interaction between two objects exist:
    Solution
    A force is a push or pull on an object. This push or pull comes from the objects interacting with one another and only from such interactions. Once the interaction stops, there is no longer any force.
  • Question 2
    1 / -0
    When a spring is pulled:
    Solution
    Force is an external agent (push or pull) which changes the state of motion or rest of an object.
    When spring is pulled, both the shape and size of the spring change.
  • Question 3
    1 / -0
    Mark the correct option
    Solution
    Force cannot be seen.we can 'see' or 'feel' the force through its effects.when an inflated balloon is pressed between the two hands,its shape and size changes.

    Force acting on a body is a push,pull or a squeeze.
  • Question 4
    1 / -0
    Suppose a man is standing behind a stationary car. Which of the following options will be correct?
    Solution
    The interaction of one object with another object results in a force between the two objects. If a man is standing behind a stationary car,  there is no interaction between the man and the car, So no force act on the car, and hence the car does not move.
  • Question 5
    1 / -0
    Mark the correct option.
    Solution
    Answer:Answer:- B
    Pushing, hitting and pulling of objects are all ways of bringing objects in motion. This friction force arises between two surfaces in contact. No motion of the wood (in fig) will take place if it is at rest and equal forces in both direction are aplied, but no net force is needed to sustain the uniform motion of the marble.
    By newtons third law: For every action, there is an equal and opposite reaction. So two forces come into picturure for action.

  • Question 6
    1 / -0
    Force is _______. Fill in the blank.
    Solution
    Force is a push or pull which changes or tends to change the state of rest or of uniform motion.

  • Question 7
    1 / -0
    Fill in the blank.
    When a force is applied on a soft object,it changes the_________ of the object. 
    Solution
    A soft object is a non-rigid object. Force can change the shape and size of a soft object.
  • Question 8
    1 / -0
     Fill in the blank.
    Interaction of one object with ________ results in a force.
    Solution
    Answer:Answer:- B
    The best example we can take into account is the gravitational force.
    Gravitation or gravity is a natural phenomenon by which all things with mass are brought toward one another, including planets, stars, and galaxies.

  • Question 9
    1 / -0
    A cricket ball hits and breaks a glass window and ends up inside the house. Identify which of the following statement is correct about the ball?
    Solution
    According to Newton's third law, if a body exerts a force on another body, another body will exert an equal force on the first body. Therefore the force the ball exerts on the window is the same as the force the window exerts on the ball. 
  • Question 10
    1 / -0
    How does mitts help baseball players in catching the ball?
    Solution
    Mitts are made of multiple layers of leather and other soft materials. Multiples layers of Mitts increases the impact time of baseball in player hand which result Players experience less force on his hand while catching the ball.
    Option D.
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