This is the substance(s) formed in a chemical reaction.

Answer : The substance(s) formed in a chemical reaction are known as products.

Explanation :

Balanced chemical reaction is the reaction where total number of atoms of individual elements is equal to the total number of individual atoms on the product side.

Chemical reaction is the reaction where one or more reactants get converted to one or more different types of substances which are known as products.

The reactants and products are separated by a right arrow.

The chemical species that are present on the left side of the right arrow are known as reactant.The chemical species that are present on the right side of the right arrow are known as product.

Hence, the substance(s) formed in a chemical reaction are known as products.

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