Kinetic energy and potential energies Flashcards
1
Q
Define Gravitational potential energies.
A
The stored potential energy of an object due to the position in a gravitational field, associated with the weight of a body given vertical height above the Earth’s surface, Ep=mgh.
2
Q
Define kinetic energy.
A
The energy of a body due to the motion of the body, Ek=1/2mv^2.
3
Q
Define Conservation of energy.
A
The total energy of a closed system remains constant: energy can never be created or destroyed.
4
Q
Define work-energy principle.
A
The total wok done by all forces acting on a body is equal to the change in kinetic energy of the body.
