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Question & Answer
Choose the Best Answer
Friction always opposes the motion, reducing the net force down the incline.
Friction increases the gravitational force, making the block accelerate faster.
Friction has no effect if the block is in motion, so net force remains unchanged.
Friction acts in the same direction as gravity to assist the motion.
Understanding the Answer
Let's break down why this is correct
Gravity pulls the block down the slope. Other options are incorrect because Some think friction helps a block speed up, but friction never adds to gravity; it pulls in the opposite direction; The idea that friction disappears when the block is already moving is false.
Key Concepts
Friction
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Deep Dive: Friction
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Definition
Friction in Physics refers to the force that opposes motion between two surfaces in contact. It plays a crucial role in determining how objects move on surfaces and is influenced by the normal force and the friction coefficient. Understanding friction is essential for analyzing the behavior of objects on horizontal and inclined surfaces.
Topic Definition
Friction in Physics refers to the force that opposes motion between two surfaces in contact. It plays a crucial role in determining how objects move on surfaces and is influenced by the normal force and the friction coefficient. Understanding friction is essential for analyzing the behavior of objects on horizontal and inclined surfaces.
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