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28 Cards in this Set
- Front
- Back
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The force created by gravity acting upon an object's mass. |
Weight |
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The SI unit of power. |
Watts |
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A push, pull, or a twist applied to an object. |
Force |
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The unit of force (N) |
Newtons |
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The resistive force of an object caused by it moving over (or through) another object (or fluid). |
Friction |
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The rate at which speed or velocity is changing. |
Acceleration |
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A measure of the force applied over a given area. |
Pressure |
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A measure of how far an object has travelled or the amount of space between two objects. |
Distance |
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The force accelerating an object forwards. |
Thrust |
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The energy an object has when it is able to move downwards towards the Earth (or some other mass). |
Gravitational Potential energy |
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A measure of the amount of work that can be done in a given amount of time. |
Power |
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A graph used to show the distance an object has travelled over a period if time. The gradient represents the speed of the object. |
Distance-Time graph |
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The rate at which an object is slowing down. When calculating it using 'a=v/t' the answer will have a negative sign. |
Deceleration |
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This will result in an overall net force and an object would accelerate or decelerate. |
Unbalanced Force |
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The friction on an object as it travels through a fluid such as air or water. |
Drag |
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Under these conditions an object will remain stationary, or continue at a constant velocity. |
Balanced Force |
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The SI unit of energy. |
Joules |
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Equivalent to the force applied to an object multiplied by the distance it travels. |
Work |
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The amount of matter in an object. |
Mass |
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The ability to do work. It comes in many forms, and can neither be created nor destroyed. |
Energy |
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Speed in a given direction. |
Velocity |
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The 't' in 'v=d/t' and 'a=v/t' |
Time |
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A graph used to show how the speed of an object has changed over a petiod of time. The gradient represents the acceleration of the object. |
Speed-Time graph |
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When one form of energy is converted into another form (or forms) such as Ep becoming Ek. |
Energy transformation |
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The reason why energy transformations are never 100% efficient. |
Energy loss |
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A measure of how fast an object is travelling. Units are 'm s-1.' |
Speed |
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The form of energy related to moving objects. |
Kinetic Energy |
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The SI unit of pressure. |
Pascales (Pa) |
