Aroller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. a passenger feels the seat of the car pushing upward on her with a force equal to five times her weight as she goes through the dip. if r = 17.0 m, how fast is the roller coaster traveling at the bottom of the dip

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