The semi-major axis of callisto's orbit around jupiter is 0.013 au. the period of its orbit is 0.046 years. what is jupiter's mass?
a. 0.00029 solar masses
b. 0.0010 solar masses
c. 0.58 solar masses
d. 1.7 solar masses
e. 960 solar masses

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 

The particles of the gas inside the ball heats up, bouncing off each other and spreading farther apart.hope my answer has you : )