kinetic energy
15
3.9
- noun
- /kɪˈnɛtɪk ˈɛnərdʒi/
- Specialized
:
energía cinética
- As the ball rolled down the hill, it gained kinetic energy due to its increasing speed.
- potential and kinetic energy
- convert kinetic energy
- kinetic energy of motion
You ask where did that kinetic energy go to, right.
- You ask where did that kinetic energy go to, right.
- But this time the cow's speed did not increase, her kinetic energy didn't change.
- The Newtonian kinetic energy is gigantic, right?
- This is just your actual altitude plus the kinetic energy contribution you have from your given airspeed.
- So it actually is going to give its kinetic energy back to the fuel via Coulomb collisions.
- In physics speak, it takes some force applied over some distance to change the kinetic energy of an object.
Examples
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At that modest speed, you can still calculate the kinetic energy of your starship using ordinary Newtonian physics.
Academic text (2000) -
This energy is the sum of kinetic energy plus potential energy.
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Because they lose kinetic energy when they rise up.
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We write down the kinetic energy of the two objects.
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The temperature however is the average kinetic energy of the particles.
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That temperature is the average kinetic energy of the molecules in that gas.
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So you can relate the temperatures to kinetic energy of the atoms moving around.
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Electron temperature is a measure of the kinetic energy of motion of the electrons in the plasma.
Academic text (1992) -
In the turbine wheel, this kinetic energy is converted back into mechanical energy.
Academic text (1998) -
That means that when it bounces, it doesn't lose any kinetic energy or any momentum.
Antonyms
- Specialized
6
3.9
Power that something has because of its position, not its movement
Surface Forms
Morphology
The meaning 'energy that something has because it is moving' is directly and compositionally derived from 'kinetic' (pertaining to motion) + 'energy' (power). This is a transparent, regular scientific noun compound that follows predictable semantics and is expressed similarly across many languages, so a learner who knows the constituents will understand it.
Etymology
Kinetic energy comes from an old Greek word for movement: kinetic means 'moving' and energy means 'power'. Imagine a rolling ball or a speeding car; because it is moving it carries that power. So kinetic energy means the 'energy something has because it is moving'.