Flashcards
Module 3: Forces and Motion Definitions
Flashcards do conjunto (15)
- 1Normal Contact ForceA force perpendicular to the surface experienced by a body when it is in physical contact with something else.
- 2Hooke's LawWithin the limit of proportionality, the extension produced in a material (x) is directly proportional to the force applied (F). F=kx.
- 3Principle of MomentsWhen an object is in equilibrium, the sum of anticlockwise moments about any point equals the sum of clockwise moments about the same point and there is no resultant force.
- 4Archimedes’ PrincipleThe upthrust experienced by an object partially or entirely immersed in a fluid is equal to the weight of the fluid displaced by the object.
- 5Newton's First Law of MotionA body will continue in its state of rest or uniform motion in a straight line unless an external resultant force acts on it.
- 6Newton's Second Law of MotionThe rate of change of momentum of a body is proportional to the resultant force (F) acting on it and the change takes place in the direction of the force, where F=ma or F=∆p/∆t.
- 7Netwon's Third Law of MotionIf body A exerts a force on body B, then body B exerts a force of equal magnitude but in the opposite direction on body A.
- 8Principle of Conservation of MomentumThe total momentum of a system of objects remains constant provided no resultant external force acts on the system.
- 9WorkMechanical transfer of energy to a system or from a system by an external force on it. W=Fd (W=work in J, F=force in N, d=distance moved by object in m).
- 10PowerRate of work done or energy converted (W) with respect to time (t). P=W/t.
- 11SpeedRate of change of distance traveled with respect to time. (s=d/t)
- 12VelocityRate of change of its displacement with respect to time.
- 13AccelerationRate of change of its velocity with respect to time.
- 14Reaction timeTime it takes between when the hazard is seen and the response is detected.
- 15Thinking distance
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- AS - Level Physics FlashCards sobre Module 3: Forces and Motion Definitions, criado por Jasmine Yap em 09-05-2016.
- Criado por
- Jasmine Yap
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