When a block is sliding down an inclined plane, the force of friction is also referred to as the______________ force.

A.perpendicular

B.parallel

C.fictional

D.normal


The correct answer is **B. parallel**.

The force of friction acts **parallel** to the surface of the inclined plane, opposing the motion of the block as it slides down.

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Here are 5 related questions to expand on this concept:
1. What role does the angle of the incline play in determining the force of friction?
2. How does the coefficient of friction affect the motion of the block?
3. What is the formula for calculating the force of friction on an inclined plane?
4. How does the normal force on an inclined plane compare to that on a flat surface?
5. What happens to the frictional force if the incline is frictionless?

**Tip**: The frictional force is proportional to the normal force and the coefficient of friction.

When a block is sliding down an inclined plane, the force of friction is also referred to as the______________ force.
A. perpendicular
B. parallel
C. fictional
D. normal

Learn how friction acts on a block sliding down an inclined plane. This problem covers key concepts like frictional force, normal force, and gravitational force components, along with relevant formulas. Suitable for students in Grades 9-12 studying physics.

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