Term

Definition
Rate of change of the velocity of an object 


Term

Definition
Rate of change of the displacement of an object 


Term

Definition
Distance travelled in a particular direction 


Term

Definition
The product of the force and the distance moved in the direction of the force 


Term

Definition
Resultant force is zero (therefore constant velocity  often stationary) 


Term

Definition
Resultant torque is zero (therefore constant rate of spinning  usually not spinning) 


Term

Definition
The speed of an object at a given moment in time 


Term

Definition
The total distance travelled by an object divided by the total time taken 


Term

Definition
Quantity with a magnitude (size) but no direction 


Term

Definition
Quantity with a magnitude (size) and a direction 


Term

Definition
The sample returns to its original size and shape when the deforming forces are removed 


Term

Definition
The sample does not return to its original size and shape when the deforming forces are removed 


Term
Ultimate tensile strength 

Definition
The maximum stress that can be applied to an object before it breaks 


Term

Definition
The change in length of an object from its original length 


Term

Definition
A material that has a large plastic region (therefore they can be drawn into a wire) 


Term

Definition
A material that distorts very little even when subject to a large stress, and does not exhibit any plastic deformation 


Term

Definition
The extension of an elastic body is proportional to the force producing it 


Term

Definition
The point at which elastic deformation becomes plastic deformation 


Term
Elastic potential energy / Strain energy 

Definition
The energy stored in an object (work an object can do) because it is stretched or compressed 


Term
Gravitational potential energy 

Definition
The energy stored in an object (the work an object can do) because of its position in a gravitational field 


Term

Definition
The energy of an object (work an object can do) due to its speed 


Term
Law of Conservation of Energy 

Definition
For a closed system, energy can be transformed from one form into another, or transferred from one place to another, but the total amount of energy remains constant 


Term

Definition
1 newton is the force that will give a 1 kg mass an acceleration of 1 m/s^2 in the direction of the force 


Term

Definition
The point where the entire weight of an object can be considered to act 


Term
Moment of a force about a point 

Definition
The force, multiplied by the perpendicular distance from the point 


Term

Definition
The product of one of the forces of a couple and the perpendicular distance between the forces 


Term

Definition
Two forces that are equal and opposite but not acting in the same straight line 


Term

Definition
For an object in rotational equilibrium, the sum of the clockwise moments about any point, equals the sum of the anticlockwise moments about that same point 


Term

Definition
The distance travelled, from seeing the need to stop, to applying the brakes 


Term

Definition
The distance a vehicle travels while decelerating to a stop 


Term

Definition
The sum of the thinking distance and the braking distance 


Term

Definition
The work done when a force of 1 N moves its point of application 1 m in the direction of the force 


Term

Definition


Term

Definition


Term

Definition
The force per unit crosssectional area 


Term

Definition
The extension per unit original length 


Term

Definition
The ratio of stress to strain, provided Hooke's Law is obeyed 


Term

Definition
Resultant force is zero and resultant torque is zero 

