Why small animals can survive a higher fall than large animals. Eg. Elephant vs ant at 30m fall

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Why small animals can survive a higher fall than large animals. Eg. Elephant vs ant at 30m fall

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Because their momentum isn’t as large. Everything falls to the ground at the same acceleration, caused by the force of gravity. yet, with a smaller mass, the momentum is smaller. Having a smaller momentum means the force of a collision (with the ground in this case) is also smaller.

Mass basically. A bit of aerodynamics too. A larger animal tends to have far greater mass than a smaller animal, and it’s mass that matters when a falling object meets hard ground. All that mass decelerating to zero velocity in close to zero time over close to zero distance – that’s a lot of force the elephant’s body needs to deal with. Remember that mass in an animal is pretty much diectly tied to volume, and volume increases cubicly. An elephant that is 1,000 times bigger than an ant will have 1,000 x 1,000 x 1,000 (or a billion) times more mass than the ant.
Velocity matters too, and an elephant won’t be significantly slowed down by air resistance over 90m, but a smaller animal (like an ant) likely will.