17. In a dream, you are piloting a rocket ship that is about to leave a station in deep space. The ship burns one percent of its initial mass each second, and the exhaust leaves the rocket engine with constant speed u. Starting from rest, how long will it take for the ship to be moving at speed u relative to the station? (Assume the station remains at a fixed position in space.)

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.

1 is a answer of a question