You are out for a bicycle ride on a calm, windless day. you are heading northward on a level road and are experiencing a pressure drag force that pushes you toward the south. this air resistance explains why you have to keep pedaling to maintain your constant speed. if someone were to examine the air that you have left behind you after you have passed through it, they would find that the air's average velocity is(a) zero and that it is calm.(b) northward.(c) zero but that it is swirling rapidly in all directions.(d) southward.

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.