Respuesta :
Kinetic energy = (1/2) (mass) (speed)² .
See that little ² there on the end ? That tells us that kinetic energy is proportional to the square of the speed.
If the speed of the moving object triples, then the moving object has 3² or nine times as much kinetic energy as it had before.
A better way to look at it is: If you want to triple the speed of a moving object, it's not enough to just give it 3 times as much kinetic energy as it has now. You have to give it 9 times as much as it has now.
Given that kinetic energy is proportional to the square of the speed, the kinetic energy increases by a factor of 9.
- Kinetic energy is equal to (1/2) mass (speed) 2. Did you notice the tiny 2 at the end? This demonstrates that kinetic energy is inversely related to speed squared.
- The moving item has 32 or nine times as much kinetic energy as it did before when its speed triples.
- A better way to put it is this,You can't just give a moving object three times as much kinetic energy as it already has in order to increase its speed by three times.
- You need to give it nine times as much as you already do.
What happens to kinetic energy when speed is tripled?
- As the speed squared, the kinetic energy rises.
What factor would its kinetic energy increase?
- The square of the object's velocity determines the kinetic energy.
- In other words, when an object's velocity twice, its kinetic energy quadruples.
Learn more about kinetic energy here:
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