In an action movie the villain is rescued from the ocean by grabbing onto the ladder Hanging from my helicopter he is so intent on a grouping of the ladder that he lets go of his briefcase of counterfeit money when he is 130 m above the water if the briefcase hits the water six seconds later what was the speed at which the helicopter was ascending

Efficiency is an act of doing something

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