So here is the theory question that I have to understand so that I can eventually solve the actual question. A body with a mass of X tonnes is moving at Y Ln/h. What would the vertical height of that body be before coming to rest. I'm presuming that this is a gravity question. Now I'm using SI so I know to convert the mass to kg and the Length/Time to m/s. After that, I don't quite get how I could figure out at what point in the air the mass goes before gravity brings it to a stand still. Help?