QUESTION 3 A larger box slides across a frictionless surface and collides with and sticks to a smaller, stationary mass as shown in the illustration.
Because momentum is conserved, the final velocity of the two boxes together would be closest to which of the following?
O 1.2 m/s

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.

Sorry i don’t know what to do

You would need to take a picture so i can see

45 is the correct answer