Forces and Motion

Question	Answer
Acceleration	The rate of change of velocity. Can be calculated from a velocity time graph
Braking Distance	The distance a vehicle travels under the braking force. Can be affected by weather conditions and car conditions.
Distance time graph	A plot of distance over time. Gradient is the speed at that point.
Elastic deformation	Non permanent deformation of a spring or elastic band. will go back to normal after deforming forces are removed
Elastic limit	Permanent deformation. Can not go back to it's original shape. Deforms plastically.
Friction	A force that opposes motion
Hooke's Law	The force acting on a spring is directly proportional to the extension, up to the elastic limit.
Newton's first law	If resultant force is 0
Newton's second law	F=MA - Force is directly proportional to acceleration. Acceleration inversely proportional to mass.
Newton's third law	The forces that two objects exert on each other are: Equal and opposite.
Contact and Non contact forces	Contact: Force that acts on something physically Non-Contact: Force that acts on something from a distance; Not through contact.
Thinking Distance	Distance vehicle travels during driver's thinking time. Affected by drugs, alcohol, fog...
Velocity-Time graph	Velocity over time. Gradient = acceleration at that point. Area under graph = Distance

Resource summary

	Created by Just Pizza almost 4 years ago