The key to making a concise mathematical definition of escape velocity is to consider the energy. if an object is launched at its escape velocity, what is the total mechanical energy e_total of the object at a very large (i. e., infinite) distance from the planet follow the usual convention and take the gravitational potential energy to be zero at very large distances. consider the motion of an object between a point close to the planet and a point very far from the planet. indicate whether the following statements are true or false. angular momentum about the center of the planet is conserved. total mechanical energy is conserved.

d eras and periods

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.