All Flashcards
What is the difference between Kinetic and Gravitational Potential Energy?
Kinetic Energy: Energy of motion, depends on mass and velocity. | Gravitational Potential Energy: Energy of position, depends on mass, gravity, and height.
What is the difference between Conservative and Non-conservative Forces?
Conservative Forces: Work done is independent of the path taken (e.g., gravity, spring force). Mechanical energy is conserved. | Non-conservative Forces: Work done depends on the path taken (e.g., friction, air resistance). Mechanical energy is not conserved, and some energy is converted to thermal energy.
What is the effect of doing positive work on an object?
The object's kinetic energy increases.
What is the effect of non-conservative forces being present in a system?
Mechanical energy is not conserved, and some energy will be converted to thermal energy.
What happens when a spring is compressed or stretched?
Elastic potential energy is stored in the spring.
What is the effect of increasing the height of an object in a gravitational field?
The object's gravitational potential energy increases.
What happens when friction acts on a moving object?
Kinetic energy is converted into thermal energy, reducing the object's kinetic energy and increasing the internal energy (temperature) of the object and the surface it's sliding on.
What is the definition of Work?
Work is the process of transferring energy into or out of a system by applying a force over a distance.
What is the definition of Kinetic Energy?
Energy an object possesses due to its motion.
What is the definition of Gravitational Potential Energy?
Energy stored in an object due to its position in a gravitational field.
What is the definition of Elastic Potential Energy?
Energy stored in a spring or other elastic material when it's stretched or compressed.
What is the definition of Thermal Energy?
Energy associated with the random motion of atoms and molecules within a system, often appearing as heat or sound.