On a snowy morning, a fast car skids along the road and runs into the back end of a truck. The bumpers of the car and truck stick together in the collision and the car and truck slide forward slowly after they hit. Describe this collision by explaining the following: What type of collision is this (elastic or inelastic) and how do you know?
What happens to the momentum of each vehicle in this collision?
Does this collision obey the law of conservation of momentum?

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

As newton's first law states a object in motion stays in motion