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push and pull
https://www.youtube.com/watch?v=dj27RwnUopQ

forces
https://www.youtube.com/watch?v=FVLAyphuZOU

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how forces affect the movement of objects around them

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how forces affect the movement of objects around them

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frictional forces makes  hard to move object like table. and gravitational forces makes we can walk, and the magnetic forces makes iron stick to the magnet.

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first you get chair. and push it as hard as you can. for 10 second. second, get the table and push again for 10 second. and compare how far did you go each time.

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Electrostatic phenomena arise from the forces that electric charges exert on each other.

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gravitational force is force that the object going down to the ground. the earth is pulling the object down to the ground so people on the earth can walk.

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magnetic force is the force that magnetic energy makes. when you put magnet and iron, thy stick together.

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non contact force is opposite with contact force. non contact force is force that doesn't touch object when it is moving. for example, there is electrostatic force, magnetic force, and gravitational force.

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The frictional force is a force that interferes with the movement of an object between the contact surfaces of two objects.

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The force resulting due to the action of muscles is muscular force.

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contact force is the force that is contact with other objects. for example, there is muscular force and frictional force.

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Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newtons and represented by the symbol F.