Which reaction would produce a solution that conducts electricity extremely well?

Acatapult is tested by roman legionnaires. they tabulate the results in a papyrus and 2000 years later the archaeological team reads (distances translated into modern units): range = 0.4 km; angle of launch = π/5 rad; landing height = launch height. what is the initial velocity of launch of the boulders if air resistance is negligible?

What is the scientific definition of energy that relates to work

The slope of a velocity time graph over any interval of time gives the during that interval