[Polo]

All objects accelerate towards earth at 32fps/9.80665mps, not fall at this speed.

With reference to the 30/40 second claim, were talking about a single projectile fired from the ground, and hence it has to accelerate to zero (top of its flight) then back down to the terminal velocity.

You may or may not know that give or take minimal external forces, the object should hit the ground at the same sort of speed (in the vertical component) as it was launched with.

In my original claim I was estimating terminal velocity to be arround 200 metres per second, although i checked and this is wrong. More accurate figures are 55mps for most objects, ranging up to about 80mps for somthing like a cannonball. These lead to approx estimation of 11 seconds and 16 seconds to reach terminal velocity, although its likely to be more, as the magnitude of acceleration will decrease as the velocity tends towards the terminal velocity.

Phew :P

Now thats sorted, who ever said back to the NPC's is right. I highly doubt Graal uses sophisticated physics with air resistance and terminal velocity, so my solutions from a few posts above would still stand.