Sorry for the low points i only have 11 : c match the correct term with the definition 1. atomic mass 2. neutron 3. atomic number 4. proton 5.isotope 1.the positive particle in the nucleus of an atom 2.the number of   protons an atom has 3.protons + neutrons in the nucleus of an atom 4.the neutrally charged element in the nucleus of an atom5.an atom of an element that has a different number of  neutrons that the standard atom of that element

Ithink the answer would be a

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