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Section 2-3 Connecting Motion with Forces

This section explores the concept of force and its effect on motion and shape. It covers unbalanced and balanced forces, friction between surfaces, and the different types of friction. Understanding these concepts helps in comprehending the connection between motion and forces.

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Section 2-3 Connecting Motion with Forces

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  1. Section 2-3 Connecting Motion with Forces

  2. What is a force? • Force- a push or pull one body exerts on another

  3. Force changes the motion or shape of an object

  4. Unbalanced force – when the forces on an object are unequal Ex. Man pushing car Result = motion

  5. Balanced Force – forces on an object that are equal in size and opposite in direction

  6. Balanced forces Chair pushing up Gravity pulling down Example: sitting down Result – forces are equal, no motion

  7. Friction – the force between two surfaces that are touching each other.

  8. Sliding Friction • Caused by two surfaces sliding past each other

  9. Rolling Friction • Friction between a rolling object and the surface it rolls on.

  10. Static Friction • Friction between two surfaces that are not moving past each other.

  11. Life without Friction

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