Final: Conservation of Energy Flashcards
1
Q
At the top of its arc, a thrown ball has _____ potential energy
A
maximum
2
Q
as a dropped penny falls toward the ground, _______ energy is converted to _____ energy
A
potential, kinetic
3
Q
a dropped racquetball will not return to its original position because
A
some of the mechanical energy is converted to nonmechanical energy
4
Q
the law of conservation of energy states that energy
A
cannot be created or destroyed
5
Q
mechanical energy can change to nonmechanical energy as a result of
A
air resistance and friction
6
Q
a system that receives energy from external sources is called
A
open
7
Q
______ is the ratio of useful work output to work input
A
efficiency
