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