The study of forces is called “Dynamics”.

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What is a force? A force is a push or pull, or an action that has the ability to change motion. Forces can increase or decrease the speed of a moving.

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Presentation transcript:

The study of forces is called “Dynamics”. Abbreviations A force is…… a push or a pull. Latin: Libra Units: It is measured in ….. pounds (English) lbs Newtons (metric) N The study of forces is called “Dynamics”.

n 4. Nuclear Weak Force 3. Nuclear Strong Force 1. GRAVITY Forces that “act at a distance” and don’t require physical contact are called the “4 fundamental forces” 1. GRAVITY 2. Electromagnetism p n e + 4. Nuclear Weak Force 3. Nuclear Strong Force

Contact Forces a.k.a Mechanical Forces When one object physical touches and moves another

Reaction Forces: appear temporarily between surfaces of conatct in reaction to other forces, then vanish. 2. Friction: acts parallel to surfaces of contact 1. NORMAL reaction forces Act perpendicular to surfaces of contact

Forces 4 fundamental forces Reaction Forces: Contact Forces a.k.a Mechanical Forces