What are examples of perfectly inelastic collisions?

a- baseball bouncing off the back

b-bumper cars bumping off of each other

c-cue ball hitting an eight ball and then stopping

d-plane landing on an aircraft carrier

e-rain sticking to a window

f-two train cars coupling together

This is what i found on google “according to the collision theory, the following criteria must be met in order for a chemical reaction to occur: molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. molecules must collide with the proper orientation.” i hope this information you.