A cyclist travelling across Ontario increases her velocity as she goes downhill coming into Thunder Bay. Choose her velocity at the top of the hill (between 5 m/s [forward] and 9 m/s [forward]), and her velocity at the bottom of the hill (between 15 m/s [forward] and 21 m/s [forward]). If she goes from the top to the bottom in 30 seconds, what is her acceleration?

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.