Term
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Definition
| Rate of change of the velocity of an object |
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Term
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Definition
| Rate of change of the displacement of an object |
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Term
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Definition
| Distance travelled in a particular direction |
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Term
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Definition
| The product of the force and the distance moved in the direction of the force |
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Term
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Definition
| Resultant force is zero (therefore constant velocity - often stationary) |
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Term
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Definition
| Resultant torque is zero (therefore constant rate of spinning - usually not spinning) |
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Term
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Definition
| The speed of an object at a given moment in time |
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Term
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Definition
| The total distance travelled by an object divided by the total time taken |
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Term
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Definition
| Quantity with a magnitude (size) but no direction |
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Term
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Definition
| Quantity with a magnitude (size) and a direction |
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Term
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Definition
| The sample returns to its original size and shape when the deforming forces are removed |
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Term
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Definition
| The sample does not return to its original size and shape when the deforming forces are removed |
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Term
| Ultimate tensile strength |
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Definition
| The maximum stress that can be applied to an object before it breaks |
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Term
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Definition
| The change in length of an object from its original length |
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Term
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Definition
| A material that has a large plastic region (therefore they can be drawn into a wire) |
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Term
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Definition
| A material that distorts very little even when subject to a large stress, and does not exhibit any plastic deformation |
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Term
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Definition
| The extension of an elastic body is proportional to the force producing it |
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Term
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Definition
| The point at which elastic deformation becomes plastic deformation |
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Term
| Elastic potential energy / Strain energy |
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Definition
| The energy stored in an object (work an object can do) because it is stretched or compressed |
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Term
| Gravitational potential energy |
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Definition
| The energy stored in an object (the work an object can do) because of its position in a gravitational field |
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Term
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Definition
| The energy of an object (work an object can do) due to its speed |
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Term
| Law of Conservation of Energy |
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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 |
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Term
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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 |
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Term
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Definition
| The point where the entire weight of an object can be considered to act |
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Term
| Moment of a force about a point |
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Definition
| The force, multiplied by the perpendicular distance from the point |
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Term
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Definition
| The product of one of the forces of a couple and the perpendicular distance between the forces |
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Term
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Definition
| Two forces that are equal and opposite but not acting in the same straight line |
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Term
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Definition
| For an object in rotational equilibrium, the sum of the clockwise moments about any point, equals the sum of the anti-clockwise moments about that same point |
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Term
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Definition
| The distance travelled, from seeing the need to stop, to applying the brakes |
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Term
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Definition
| The distance a vehicle travels while decelerating to a stop |
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Term
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Definition
| The sum of the thinking distance and the braking distance |
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Term
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Definition
| The work done when a force of 1 N moves its point of application 1 m in the direction of the force |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| The force per unit cross-sectional area |
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Term
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Definition
| The extension per unit original length |
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Term
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Definition
| The ratio of stress to strain, provided Hooke's Law is obeyed |
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Term
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Definition
| Resultant force is zero and resultant torque is zero |
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