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Work done and energy transfer key terms
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key terms
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Topic
Work done and energy transfer
Key terms
Work Done
The energy transferred when a force moves an object through a distance.
Energy Transfer
The process of energy moving from one system or object to another, often as a result of work done.
joule
The SI unit of energy, equivalent to the work done when a force of one newton displaces an object by one metre.
newton metre
A unit of measurement for work done or energy transfer, defined as the work done by a force of one newton acting over a distance of one metre.
Work Done
The energy transferred when a force moves an object through a distance.
Force
A push or pull acting on an object, measured in newtons (N).
Work Done
The energy transferred when a force moves an object through a distance.
Force
A push or pull acting on an object, measured in newtons (N).
Work Done
The energy transferred when a force moves an object through a distance.
Force
A push or pull acting on an object, measured in newtons (N).
Work Done
The energy transferred when a force moves an object through a distance.
Distance
The length of the path over which an object is moved when a force is applied.
Work Done
The energy transferred when a force moves an object through a distance.
Distance Moved
The length of the path along which an object is moved by a force.
Work Done
The energy transferred when a force moves an object through a distance.
Friction
The resistance that one surface or object encounters when moving over another.
Work Done
The energy transferred when a force moves an object through a distance.
Kinetic Energy
The energy an object possesses due to its motion, calculated as 0.5 times the mass times the velocity squared.
Work Done
The energy transferred when a force moves an object through a distance.
Force
A push or pull acting on an object, measured in newtons (N).
Work Done
The energy transferred when a force moves an object through a distance, calculated using the equation W = F x s.
Force
A push or pull acting on an object, measured in newtons (N), which can cause an object to accelerate.
braking force
The force applied to slow down or stop a moving vehicle, transferring energy from its kinetic energy store.
kinetic energy
The energy possessed by an object due to its motion, calculated as half the mass multiplied by the square of its velocity.
braking
The process of applying a force to slow down or stop a moving object.
thermal stores
Energy storage systems that hold thermal energy, often resulting from work done against friction.
Work Done
The energy transferred when a force moves an object through a distance.
Braking Force
The force applied to slow down or stop a moving object, transferring energy from its kinetic energy store.
stopping distance
The total distance a vehicle travels from the moment the driver applies the brakes until it comes to a complete stop.
braking force
The force exerted by the brakes to slow down or stop a moving vehicle, which transfers energy from the vehicle's kinetic energy store.
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