Kinetic Energy (midterm studyguide)
What do waves transmit?
Energy
Can energy be destroyed?
Energy cannot be created or destroyed.(conservation of energy)
How does kinetic energy turn into potential energy?
For example, on a roller coaster when the car is at the top of the hill it has a lot of potential energy (stored energy). When the car moves down the hill, some of the potential energy changes to kinetic energy. Then kinetic energy takes the car back up the hill.
What is velocity?
A measurement that accounts for speed and direction.
What are some examples of Kinetic energy?
Any matter that is moving has kinetic energy. (rolling ball, swinging rope, moving particles)
How does a roller coaster work?
It works because energy continually changes from potential to kinetic energy
Does kinetic or potential energy take the car up the next hill?
Kinetic energy takes the car up the hill.
When a roller coaster eventually stops what has happened?
Most of the energy has transformed to thermal energy through friction.
Is energy and force the same thing?
No force is a push or pull when energy is the ability to do work.
How does kinetic energy equal to its velocity?
One-half of its mass times the square of its velocity.
As the car on a roller coaster moves down the hill what happens to the potential energy?
Some of the potential energy changes to kinetic energy.
What is potential energy?
Stored energy that can be released to do work.
What is energy?
The ability to do work.
At the top of a hill a car has a lot of potential or kinetic energy?
The car has potential energy.
What is kinetic energy?
The energy that a moving object has as a result of its mass and motion.
What factors of kinetic energy depend upon?
The moving object's mass and velocity.
Is a rotating object an example of kinetic energy?
Yes it is an example of kinetic energy.
Do all objects contain energy?
Yes objects that are in motion contain kinetic energy and objects that are yet to move contain potential energy.
When a bat hits a baseball does some of the kinetic energy transfer from the bat to the ball.
Yes some of the energy transfers.
Can kinetic energy transfer from on object to another?
Yes when one object comes in contact with another object, it applies a force that can move that object. When the second object moves it gains kinetic energy from the first object.
