Question

jenny is trying to describe a wave. which example would be the best description? a toy car hitting a wall and bouncing back a toy car rear - ending a toy car that then rear - ends another toy car two toy cars driving parallel to each other at the same speed two toy cars driving away from each other at the same speed

Explanation:

A wave is a disturbance that transfers energy through a medium. In the case of a wave, energy is transferred from one point to another. When a toy car rear - ends another toy car that then rear - ends another toy car, energy is being transferred from one car (or "particle" in a wave - like analogy) to the next. A toy car hitting a wall and bouncing back is just a reflection (not a wave - like energy transfer through a series). Two toy cars driving parallel or away from each other at the same speed do not show the energy transfer characteristic of a wave.

Answer:

a toy car rear - ending a toy car that then rear - ends another toy car