During which type of collision do the two objects stick together

Perfectly inelastic collision

Explanation:

There are two types of collisions:

- Elastic collision: in an elastic collision, the total momentum of the objects before and after the collision is conserved; also, the total kinetic energy of the objects before and after the collision is conserved.

- Inelastic collision: in an inelastic collision, the total momentum of the objects before and after the collision is conserved, while the total kinetic energy is not. In fact, part of the total kinetic energy of the objects is lost during the collision, converted mainly into thermal energy (or other forms of energy) due to the presence of frictional forces.

- A particular type of inelastic collision is called perfectly inelastic collision: this occurs when the two objects stick together after the collision. In this case, the maximum amount of kinetic energy of the system is lost.

answer: a. same unit

explanation:

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.