Convert 100 milligrams to meters

Which composition of water moves to begin a deepwater current?

When using the scientist method, which step comes last?

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.