30044378
Beschreibung
Karteikarten von Adriana Vincelli-Joma, aktualisiert more than 1 year ago
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Erstellt von Adriana Vincelli-Joma
vor mehr als 3 Jahre
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| Frage | Antworten |
| force | -push/pull on object with specific magnitude and direction -represented by vectors -expressed as multiple of standard force |
| inertia | -tendency of object to remain at rest or remain in motion -measured by mass |
| mass | -quantity of matter in substance -measured in kilograms |
| weight | gravitational force on mass |
| Newton's First Law of Motion | body at rest remains at rest, or, if in motion, remains in motion at constant velocity unless acted on by net external force |
| Newton's Second Law of Motion | -acceleration of system is: *directly proportional to and in same direction as net external force acting on system *inversely proportional to its mass -a = F_net/m -F_net = ma |
| Newton's Third Law of Motion | whenever one body exerts a force on a second body, first body experiences a force that is equal in magnitude and opposite in direction to force that it exerts |
| action force | -force that acts on an object -e.g. push against a wall |
| reaction force | -force that exerts an equal and opposite force against an object' -acts against action force -e.g. force that wall exerts on person pushing it |
| normal force | -force that surface applies on object to support the weight of the object -acts perpendicular to surface on which object rests |
| normal force of object at rest on non-accelerating horizontal surface | N = mg |
| weight components of object at rest on inclined plane | -w_|| = mg sinθ -w_┴ = mg cosθ |
| tension | -pulling force that acts along medium -e.g. force exerted by a rope or cable |
| tension force | force that supports weight of object |
| tension force on object at rest | T = mg |
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