You want to pour exactly of sugar into a bowl. You place the bowl on a scale and zero it. Then you pour sugar, from a constant height at a constant rate. When should you stop pouring to ensure that you have exactly of sugar?
Details and Assumptions:
Ignore air resistance during the motion.
Pouring means that the sugar initially has zero velocity.
Once the sugar reaches the scale, it is brought to a full stop.
The time needed to pour the 300 g of sugar is longer than the falling time of the sugar.
Bonus: Will the answer change if the sugar bounces up and down a bit before finally settling?