4.It is essential for students to know that a force is a push or pull. Forces can make things move faster, slower, stop, or change direction. Different forces (including magnetism, gravity, and friction) can affect motion. Magnetism • A force that acts at a distance and cannot be seen.
5.Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.
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Answer:
4.It is essential for students to know that a force is a push or pull. Forces can make things move faster, slower, stop, or change direction. Different forces (including magnetism, gravity, and friction) can affect motion. Magnetism • A force that acts at a distance and cannot be seen.
5.Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.
Explanation:
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4. MAGNETISM, FRICTION
5.Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.