Rocket in vacuum, no. Cannon in atmosphere, yes. A reasonably designed
cannon will be accelerating the projectile as long as it's in the
atmosphere. When it leaves the barrel it will encounter a deceleration that
will last until it slows to terminal velocity or impacts something.
On Tuesday, December 1, 2015, John Dom <johndom@xxxxxxxxx> wrote:
Just checking assumptions, please advise.
Am I right assuming a mercury droplet or loose ball-bearing will not move
forward inside a rocket in vacuum the instant the motor stops? It then only
might start floating.
Nor will such droplet move forward inside a cannon projectile after it
leaves the muzzle since on that instant push force has stopped. As to
during the short residence time inside barrel, it might fly forward I
reckon.
jd