Final answer:
Applied force is a force that initiates motion or changes velocity, while frictional force opposes motion. Both forces affect the motion of an object, but in opposite directions.
Step-by-step explanation:
Applied Force:
Applied force is a force that is directly applied to an object by a person or another object. It is a force that initiates the motion of an object or changes its velocity. An applied force can be a push or a pull. For example, when you push a book across a table, you are applying a force to the book.
Frictional Force:
Frictional force is a force that opposes the motion of an object when it comes into contact with a surface. It acts in the opposite direction of the applied force. Frictional force arises due to the roughness or irregularities of the surfaces in contact. For example, when you slide a box on the floor, the frictional force between the box and the floor opposes its motion.
Comparison:
Both applied force and frictional force are forces that can affect the motion of an object. However, the key difference between them is the direction in which they act. Applied force initiates motion or changes the velocity of an object, while frictional force opposes motion. Another difference is that applied force can be controlled or chosen by the person or object applying it, while frictional force depends on the nature of the surfaces in contact.
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