A book is resting on a horizontal table. When you push the book horizontally and let go, you observe that the book moves for a while and then stops. Which of the following statements is correct?Group of answer choicesthe book stops because a non-zero net force was working on it before stoppingthe book stops because it is the inherent property of all objects to come to restthe book stops because it does not want to fall from the tablethe book stops because the normal force on the book is equal to its weightthe book stops because the earth is pulling it down
Question
A book is resting on a horizontal table. When you push the book horizontally and let go, you observe that the book moves for a while and then stops. Which of the following statements is correct?Group of answer choicesthe book stops because a non-zero net force was working on it before stoppingthe book stops because it is the inherent property of all objects to come to restthe book stops because it does not want to fall from the tablethe book stops because the normal force on the book is equal to its weightthe book stops because the earth is pulling it down
Solution
The correct statement is: "The book stops because a non-zero net force was working on it before stopping."
Here's the step-by-step explanation:
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When you push the book, you apply a force that sets it in motion. This is according to Newton's first law of motion, which states that an object at rest will stay at rest, and an object in motion will stay in motion, unless acted upon by an external force.
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After you let go of the book, there is no longer a force being applied to keep the book moving. However, there are still forces acting on the book. These include the force of gravity pulling the book down and the frictional force between the book and the table.
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The frictional force opposes the motion of the book and gradually slows it down. This is a non-zero net force that is working on the book, causing it to eventually stop. This is in line with Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
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The other statements are incorrect. Objects do not inherently come to rest without a force acting on them (this would contradict Newton's first law of motion). The book does not stop because it does not want to fall from the table - inanimate objects
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