# Weight of Falling Can

*Most recent answer: 05/02/2019*

- John A (age 40)

Albuquerque

The weight (force gravity exerts on the can) is the same as usual. When the can is just sitting on your foot, not accelerating the force between it and your foot must just equal the weight. That's why the can isn't accelerating. When the can lands on your foot, it quits moving downward. That means, by definition, that it's accelerating upward. So the force between it and your foot is the usual one plus the force necessary to cause the upward acceleration. That's why it hurts.

This is the reason that soft objects (eg,softballs) don't hurt as much as hard ones (baseballs) when they hit you. They don't slow down as quickly, so the force that your head exerts on them (and, therefore, the force they exert on your head) is less.

Mike W.

*(published on 05/02/2019)*