Which of the following statements does not use the term light-year in an appropriate way? a) it's about 4 light-years from here to alpha centauri. b) it will take me light-years to complete this homework assignment. c) a light-year is about 10 trillion kilometers. d) it will take the voyager spacecraft about 20,000 years to travel just 1 light-year. e) the milky way galaxy is about 100,000 light-years in diameter.

Light year is the distance traveled by light in 1 year of time interval

so here we can say that the statement must have used the word light year as the distance

so we have

A) It's about 4 light-years from here to Alpha Century.

this shows the distance between two so it is correct

B) It will take me light-years to complete this homework assignment.

here it represent the light year as time so it is INCORRECT

C) A light-year is about 10 trillion kilometers.

This shows the distance so it is correct

D) It will take the Voyager spacecraft about 20,000 years to travel just 1 light-year.

It shows the distance so it is correct

E) The Milky Way Galaxy is about 100,000 light-years in diameter.

this is distance so it is also correct

it is a negative 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.