That's already a new result for us, but we should also point out that the only thing that changes how fast the object is moving is how high it's dropped from; the mass doesn't matter, and also we have...That's already a new result for us, but we should also point out that the only thing that changes how fast the object is moving is how high it's dropped from; the mass doesn't matter, and also we have no knowledge of the direction of motion (ok, yes we know in this case it's "downwards", but generally energy cannot tell us that!).