A50.0 kg child stands at the rim of a merry-go-round of radius 1.90 m, rotating with an angular speed of 3.10 rad/s (a) what is the child's centripetal acceleration? (b) what is the minimum force between her feet and the floor of the merry-go-round that is required to keep her in the circular path? (c) what minimum coefficient of static friction is required? is the answer you found reasonable? in other words, is she likely to be able to stay on the merry-go-round? m/s2

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 

I’m not sure about this question