A rock is tossed off of the top of a balcony from rest. The balcony is 9 meters high. How long does it take to hit the ground?

The masses of the objects and their densities

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.

//(b) both involve the use of levers;