Syllabus Aims…
5.1 use the following units: degrees Celsius (oC), kelvin (K), joule (J), kilogram (kg), kilogram/metre3 (kg/m3), metre (m), metre2 (m2 ), metre3 (m3), metre/second (m/s), metre/second2 (m/s2), newton (N), pascal (Pa).
5.2 use the following unit: joules/kilogram degree Celsius (J/kg oC) (Triple)
Units Defined…..
Kilogram (kg): the SI unit of mass, equivalent to the international standard kept at Sèvres near Paris (approximately 2.205 lb).
Joule (J): the SI unit of work or energy, equal to the work done by a force of one newton when its point of application moves one metre in the direction of action of the force.
Speed: the rate at which someone or something moves or operates or is able to move or operate. m/s or ms-1
Acceleration (m/s/s OR Nkg-1 OR ms-2) vehicle’s capacity to gain velocity.
Metre (m): the fundamental unit of length in the metric system, equal to 100 centimetres or approximately 39.37 inches. Can be area or volume as m2 or m3
Newton (N): the SI unit of force. It is equal to the force that would give a mass of one kilogram an acceleration of one metre per second per second.
Pascal: the unit of pressure found from the force per unit area i.e. 1N/cm2 or 1N/m2 = 1Pa
Kelvin: a temperature scale based the motion of particles -273°C = 0K so more useful to Physics.
Celsius: a temperature scale for everyday use based on the BP and MP of H2O 0°C
Specific Heat Capacity: the energy absorbed by 1kg of matter to raise the temperature by 1°C (Triple Only)
Resources…
Use this PowerPoint for a quick review…5 SLG Part A Units
Useful Videos…
Temperature Scales: Kelvin, Celsius, & Fahrenheit @GettinJunkDone
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