Flashcards
Mechanics Definitions
Flashcards do conjunto (30)
- 1ScalarA quantity with only magnitude
- 2VectorA quantity with both magnitude and direction
- 3SpeedThe rate of change of distance
- 4VelocityThe rate of change of displacement
- 5AccelerationThe rate of change of velocity
- 6Terminal VelocityWhen an object no longer accelerates because its net force = 0
- 7Braking DistanceThe distance travelled by the car between the time of the brakes being applied and the car stopping
- 8Thinking DistanceThe distance travelled by the car in the time taken for the driver to react.
- 9Stopping DistanceBraking Distance + Thinking Distance
- 10The NewtonThe force required to accelerate a mass of 1kg to 1ms-2
- 11Principle of MomentClockwise moment = Anticlockwise moment
- 12EquilibriumNet force acting on the object must be zero, net moment about any point must also be zero
- 13Centre of GravityThe point where an object’s entire weight appears to act
- 14CoupleA pair of equal and opposite forces separated by a distance
- 15A torque of CoupleOne of the forces multiplied by the perpendicular distance between the forces
- 16Density
- 17Pressure
- 18Stress
- 19Strain
- 20Young's Modulus
- 21Hooke's LawThe extension of a spring is directly proportional to the force applied to it (within the elastic region)
- 22Elastic LimitThe point after which a material does not return to its original form when stress is removed
- 23Plastic DeformationWhen the material does not return to its original length/shape/size
- 24Brittle MaterialDoes not have a plastic region, breaks at elastic limit
- 25Ultimate Tensile Strengthforce ×distance moved in direction of force
- 26The JouleThe work done moving 1N through 1m in the direction of the force
- 27PowerThe rate at which work is done.
- 28The WattThe transfer of energy of one joule per second
- 29Principle of Conservation of EnergyIn a closed system energy cannot be created or destroyed
- 30Special Theory of a RelativityThe mass of an object increases as it approaches the speed of light
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- Physics (Mechanics) FlashCards sobre Mechanics Definitions, criado por 10awalls em 24-03-2014.
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