A loaded railway car with a mass 5500 kg is rolling to the right at 2 m/s when it collides and sticks to an empty railway car with a mass of 2500 kg rolling to the left on the same track at 3 m/s. What is their speed and direction of the pair after the collision?

I am not sure what the answer is but i will try to find it out ok

and also please delete my question

number of electrons for neutral cl

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.