The expanding Universe theory a. was developed before the Big Bang theory. b. raises the question of when the expansion began. c. contends that galaxies are moving away from the Earth and from each other at a very low velocity. d. is supported by the fact that all galaxies exhibit a blue shi

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 

Ithink c because you have to work to become goid