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Questions and Answers
Which of the following best explains why an object moving along a surface slows down and eventually stops?
Which of the following best explains why an object moving along a surface slows down and eventually stops?
- The object loses kinetic energy as it interacts with the surface
- The object's velocity decreases due to a decrease in potential energy
- The surface exerts a force on the object causing a decrease in momentum
- Friction between the object and the surface converts kinetic energy into heat (correct)
What is the primary factor contributing to an object's gradual slowing down and eventual stop when moving along a surface?
What is the primary factor contributing to an object's gradual slowing down and eventual stop when moving along a surface?
- Reduction in gravitational force acting on the object
- Increase in potential energy due to contact with the surface
- Transfer of kinetic energy into potential energy during motion
- Conversion of kinetic energy into other forms due to friction (correct)
What effect does the interaction between an object and the surface have on the object's motion?
What effect does the interaction between an object and the surface have on the object's motion?
- It alters the object's potential energy as it slows down
- It causes a decrease in the object's momentum over time
- It increases the object's kinetic energy as it moves
- It results in a net decrease in the object's total mechanical energy (correct)
Which of the following factors is NOT a significant contributor to the level of friction between two surfaces?
Which of the following factors is NOT a significant contributor to the level of friction between two surfaces?
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In the context of friction, which factor refers to the force that opposes the initial motion of an object over a surface?
In the context of friction, which factor refers to the force that opposes the initial motion of an object over a surface?
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How does the type of material affect the level of friction between two surfaces?
How does the type of material affect the level of friction between two surfaces?
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