Complete the passage to summarize factors affecting the speed of a wave. The material or substance that a wave moves through is called a . The medium affects the speed of the wave that passes through it. One factor that affects the speed of a wave is the of medium. Some waves move faster in solids and some waves move faster in liquids and gases. Another factor that affects wave speed is the of the medium.

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction