Describe in your own words what the attachment dance is and what implications there might be for children who struggle with this concept. How can caregivers help to promote this?

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.