In human relations, imagined risks are?

In human relation, imagined risks are defined as an exageration of a risk which can cause a person to develop a behaviour that negatively affect his or her self confidence. Imagined risks are imaginary and they are created out of fear and doubt. For instance, worrying about the possibility of a nuclear attack is an example of an imagined risk.

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 

Newton's first law describes something special that results from the sum of all the external forces (including gravity) on an object.