# Physics mass and weight.txt

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• author "me"
• fileName "Physics mass and weight"
• tags "Physics MCAT mass weight"
• description ""
• Define mass. Define inertia
• Mass: the quantitative measure or an objects inertia
• Inertia: the tendency of an object to remain in its present state of motion
1. What are the four forces in nature
• Strong and weak nuclear forces
• Electromagnetic
• Gravity
2. Define Newtons laws
• 1: law of inertia. Objects request changes in motion
• 2: F=ma which means change in motion/acc is inversely proportional to the size of the object and the force required to change the motion is directly proportional to the size of the object
• 3. Equal and opposite reaction, the opposite reaction never occurs in the reaction system
3. Give the equationa for centripetal acceleration and centripetal force
• Ac= (V^2)/r
• Fc=mAc
4. What is the equation for force exerted by friction. What are the friction types
• Ff=(friction coefficient)(normal force)
• Static and kinetic, static is stronger
5. Define Hooke's law
• F=-k(delta(x))
• The force exerted by a material is proportional to a constant times the amount of displacement experienced by the material by an external force
 Author: p.reilly1227 ID: 230944 Card Set: Physics mass and weight.txt Updated: 2013-08-22 20:48:49 Tags: physics mass weight Folders: Description: physics, mass, weight Show Answers: