3. Lindsey went for a long walk on Saturday. She went 5.0 miles south, then another 2.5 miles at 30.0 degrees south of west, she then went 2.5 miles
at 60.0 degrees north of west. Then she stopped because she was too tired
to go any further. (called her dad from Wawa to get her) What was her
displacement?

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 

Ibelieve the answer is d. densityhope my answer has you : )

Ibelieve the answer is arteries