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.
