Which statement best illustrates the role that gravity played in the formation of the solar system? Gravity allowed the nebula to expand and move outward.

Gravity caused the nebula to cool enough for planets to form.

Gravity removed excess gas and dust from the cores of the planets.

Gravity pulled particles of dust and gas together to form planets.

The best description is: . nobody has any idea what q is.

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