if a kid is practicing for a play and there is an auditorium of loud people that are shouting, and he screams, he hears and echo, when he screams in a quiet auditorium, he doesn't hear an echo, why is that

he . if i may ask what i your question exactly?

explanation:

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )