a tennis ball bounces off a wall and its momentum is reversed. Explain this using the conservation of momentum and the word closed and isolated

10 neutrons is the answer

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.

You would need to take a picture so i can see