Physics (Combined Science) · GCSE · AQA · AQA GCSE Combined Science: Trilogy (8464) — Physics — Foundation · Specification point · 6.1.1.2 · Energy · Energy changes in a system, and the ways energy is stored before and after such changes
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6.1.1.2 Changes in energy
| Content | Key opportunities for skills development |
|---|---|
Students should be able to calculate the amount of energy associated with a moving object, a stretched spring and an object raised above ground level. | WS 1.2, 4.3, 4.4, 4.6 MS 1a, c, 3b, c |
The kinetic energy of a moving object can be calculated using the equation: |
kinetic energy, , in joules, J
mass, m, in kilograms, kg
speed, v, in metres per second, m/s
The amount of elastic potential energy stored in a stretched spring can be calculated using the equation:
MS 3b, c Students should be able to recall and apply this equation. |
(assuming the limit of proportionality has not been exceeded) elastic potential energy, , in joules, J spring constant, k, in newtons per metre, N/m extension, e, in metres, m The amount of gravitational potential energy gained by an object raised above ground level can be calculated using the equation: | MS 3b, c Students should be able to apply this equation which is given on the Physics equation sheet. |
gravitational potential energy, , in joules, J mass, m, in kilograms, kg gravitational field strength, g, in newtons per kilogram, N/kg (In any calculation the value of the gravitational field strength (g) will be given). height, h, in metres, m | MS 3b, c Students should be able to recall and apply this equation. AT 1 Investigate the transfer of energy from a gravitational potential energy store to a kinetic energy store. |