Flashcards
Forces and Motion
Cards in this deck (13)
- 1AccelerationThe rate of change of velocity. Can be calculated from a velocity time graph
- 2Braking DistanceThe distance a vehicle travels under the braking force. Can be affected by weather conditions and car conditions.
- 3Distance time graphA plot of distance over time. Gradient is the speed at that point.
- 4Elastic deformationNon permanent deformation of a spring or elastic band. will go back to normal after deforming forces are removed
- 5Elastic limitPermanent deformation. Can not go back to it's original shape. Deforms plastically.
- 6FrictionA force that opposes motion
- 7Hooke's LawThe force acting on a spring is directly proportional to the extension, up to the elastic limit.
- 8Newton's first lawIf resultant force is 0
- 9Newton's second lawF=MA - Force is directly proportional to acceleration. Acceleration inversely proportional to mass.
- 10Newton's third lawThe forces that two objects exert on each other are: Equal and opposite.
- 11Contact and Non contact forcesContact: Force that acts on something physically
Non-Contact: Force that acts on something from a distance; Not through contact. - 12Thinking DistanceDistance vehicle travels during driver's thinking time. Affected by drugs, alcohol, fog...
- 13Velocity-Time graphVelocity over time. Gradient = acceleration at that point.
Area under graph = Distance