PLEASE HELP ill also answer questions that you have posted if you answer these correctly (40pts)

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)

Name the non metal condut electricity

True or false graphs must include scales that increase by the same amount