Energy Flashcards
What is kinetic energy?
Kinetic energy is the energy an object possesses due to its motion.
True or False: Kinetic energy increases with the square of the velocity.
True.
What is potential energy?
Potential energy is the energy stored in an object due to its position or configuration.
Fill in the blank: Kinetic energy is directly proportional to the ______ of the object.
mass and the square of its velocity.
What type of energy is associated with a compressed spring?
Elastic potential energy.
True or False: An object at rest has kinetic energy.
False.
What happens to the potential energy of an object as it falls?
The potential energy decreases as the object falls.
What type of energy conversion occurs when a roller coaster descends?
Conversion of potential energy to kinetic energy.
If an object’s mass doubles, what happens to its kinetic energy if the velocity remains the same?
The kinetic energy doubles.
True or False: Potential energy can be converted into kinetic energy.
True.
What is mechanical energy?
Mechanical energy is the sum of kinetic and potential energy in a system.
Fill in the blank: An object raised to a height has ______ potential energy.
gravitational.
In a closed system, what is conserved during energy transformations?
Total mechanical energy.
What is the effect of height on potential energy?
Potential energy increases with height.
True or False: An object moving at a constant speed has no kinetic energy.
False.
