You are an engineer getting ready to go meet the mayor on the new building development project going on downtown. The mayor has concerns that the building has been built a lot taller than what it was supposed to be. As you stand on top of the building with the mayor, you realize that you forgot your tape measure (but you do have your cell phone). Using just your cell phone and your knowledge of kinematics equations (and maybe a nearby rock), you must impress the mayor with how smart you are and reassure him the building is the proper height. Explain how you could use your cell phone and a specific kinematic equation to estimate the height of the building.

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.