Understanding Force and Motion: Key Concepts and Examples

Explore the fundamental concepts of force and motion, including balanced and unbalanced forces, gravity, inertia, friction, Newton's laws, and the unit of force (Newton). Discover how these concepts influence the behavior of objects and their motion through engaging examples and explanations.

• Science
• Physics
• Force
• Motion
• Newton

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1. FORCE AND MOTION Vocabulary Week 2

2. S8P3b. Demonstrate the effect of balanced and unbalanced forces on an object in terms of gravity, inertia, and friction.

3. FORCE Using energy to do work. Examples: Pushing or pulling https://www.yout ube.com/watch?v =_LdcxCdB-s8

4. BALANCED FORCE Equal forces acting on one object in opposite directions are called balanced forces. Each force is balanced by the other. Balanced forces acting on an object do not change the objects motion.

5. UNBALANCED FORCE Whenever there is a net force acting on an object, the forces are unbalanced. Unbalanced forces can cause an object to start moving, stop moving, or change direction. Unbalanced forces acting on an object result in a net force and cause a change in the object s motion. https://www.youtube.com/watch?v=HEJOybRxclk

6. INERTIA This is the tendency of an object to resist a change in motion. Newton s First law of motion I also called the law of inertia. Inertia depends on Mass. Some objects have more inertia than others. https://www.youtube.com/watch?v=Ncn2LH9yYms

7. GRAVITY (GRAVITATIONAL FORCE) This is a force that pulls objects toward eachother. Isaac Newton concluded that a force acts to pull objects straight down toward the center of the earth. https://www.youtube.com/watch?v=ljRlB6TuMOU

8. NEWTON (UNIT) The strength of force is the unit of measurement named for Isaac Newton. It is equal to the amount of net force required to accelerate a mass of one kilogram at a rate of one meter per second squared. Example: You exert approximately 1 Newton of force when you lift a small lemon.

9. FRICTION The force that two surfaces exert on each other when they rub against each other is called friction. Smooth surfaces create less friction than rough surfaces. The strength of the force of friction depends on two factors: how hard the surfaces push together and the types of surface involved. https://www.youtube.com/watch?v=MAqrWvkBoHk

10. SLIDING FRICTION Occurs when 2 surfaces slide over each other.

11. ROLLING FRICTION Occurs when an object rolls across a surface.

12. FLUID FRICTION Occurs when a solid object moves through a fluid.

13. STATIC FRICTION Friction between two or more solid objects that are not moving relative to each other. https://www.youtube.com/watch?v=C7NPD9W0kro

14. TOTD How would you explain an objects movement across a smooth surface versus its movement across a rough surface?

15. SCIENCE IS H.O.T. https://www.youtube.com/watch?v=4yyb_RNJWUM How could you compare/contrast the theories of Newton and Einstein?