# physics aqa gcse energyWatch

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#1
I'm terrible at these types of energy transfer questions can anyone give me model answers to learn for the energy transfers in the following system changes: object projected upwards, moving object hitting an obstacle, object accelerated by a constant force, vehicle slowing down, bringing water to boil in an electric kettle?
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10 months ago
#2
- For object projected up the kinetic energy is transferred to gravitational potential
- For object hitting obstacle the kinetic energy is at start, this may be transferred to heat (due to friction) but most will stay kinetic if it rebounds
- For an object accelerated by a constant force it will depend on what is causing the force; for an engine or something this will be chemical to kinetic. But other things can cause this acceleration eg, gravity (this will be gravitational potential to kinetic)
- A vehicle slowing down will start with kinetic energy due to motion but when brakes applied the kinetic is turned to heat due to the friction
- Boiling water in a kettle will be electrical energy converted to heat energy

I really hope this helps a little bit. This guide on BBC Bitesize might help too!
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#3
Ah thanks so much thats really helpful!
(Original post by SDrew33)
- For object projected up the kinetic energy is transferred to gravitational potential
- For object hitting obstacle the kinetic energy is at start, this may be transferred to heat (due to friction) but most will stay kinetic if it rebounds
- For an object accelerated by a constant force it will depend on what is causing the force; for an engine or something this will be chemical to kinetic. But other things can cause this acceleration eg, gravity (this will be gravitational potential to kinetic)
- A vehicle slowing down will start with kinetic energy due to motion but when brakes applied the kinetic is turned to heat due to the friction
- Boiling water in a kettle will be electrical energy converted to heat energy

I really hope this helps a little bit. This guide on BBC Bitesize might help too!
0
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