According to the superposition principle of waves, A. when two wave pass through the same material they always double in amplitude. B. many different waves can pass through the same point at once. C. when two waves pass through the same material they always cancel each other out. D. only one wave is able to pass through a single point at a single time.

Ithink your answer is d

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 

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