Energy and Forces in Motion

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Questions and Answers

Which type of energy is associated with a rolling ball?

Thermal energy
Chemical energy
Potential energy
Kinetic energy (correct)

Energy can be created or destroyed.

False (B)

What is power in terms of energy?

Power is how quickly energy is used or work is done.

Energy from food or fuels is known as ______ energy.

<p>chemical</p> Signup and view all the answers

Match the following types of energy with their descriptions:

<p>Kinetic energy = Energy of moving objects Potential energy = Stored energy Thermal energy = Heat energy Light energy = Energy from the Sun or a light bulb</p> Signup and view all the answers

Flashcards

What is energy?

The ability to do work or cause change. Everything that happens around us requires energy, like moving objects, heating something, or producing light.

Kinetic energy

Energy of motion. The faster an object moves, the more kinetic energy it has.

Potential energy

Stored energy. An object can have potential energy due to its position or state.

Work

The transfer of energy from one object to another caused by a force moving an object over a distance.

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Law of Conservation of Energy

Energy cannot be created or destroyed, only transformed from one form to another.

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Study Notes

Energy

Energy is the ability to do work or cause change.
Many forms of energy exist, including kinetic, potential, thermal, light, and chemical energy.
Energy cannot be created or destroyed; it only changes forms (law of conservation of energy).

Force and Energy

Forces and Motion:
- Force is a push or pull that can change an object's motion.
- Forces can transfer energy (e.g., kicking a ball).
Work and Energy:
- Work is done when a force moves an object over a distance.
- Work transfers energy between objects.
Kinetic and Potential Energy:
- Kinetic energy increases with increasing speed.
- Potential energy increases with height or stretching.
Energy Transfer:
- Energy moves between objects or changes forms.
Power:
- Power is the rate at which energy is used or work is done. Higher power means faster energy use.