Could somebody help ? A boy with mass 5okg running at 5m/s jumps on to a 20kg trolley traveling in the same direction at 1.5m/s. What is their common velocity ?!

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.

20hope i helep