A box of mass m sliding with an initial speed of vi on a rough horizontal surface runs into a fixed spring of elastic constant k, compressing it a distance x1 from its relaxed position while momentarily coming to rest. Write down the equation that best represents the energy conversion during the process of the box compressing the spring?

not really sure but thinking 1.54 mm/us

this means that the temperature of both substances will be equal

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.