Two freight cars, each with a mass of 3.0 x 105 kg, collide. One was initially moving at 2.2 m/s; the
other was at rest. They stick together. What was their fin
al speed? What type of inelastic collision is this?

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies. molten iron has a density of 7.0g/cm cubed. in its solid state, iron has a density of 8.0g/cm cubed.

Can anybody me with this? ? (picture included.)

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.