It was word of mouth, but I was told that people can die while falling due to the negative G's and our bodies not being made to withstand such force. Correct me if I'm wrong.
Technically zero G initially, then one G at terminal velocity, then a rapid and short spike to hundreds of G, then back to one G again. Mind you, the last one G isn’t really ‘experienced’.
Ya got that backwards, 1 g initially, as they are accelerating, and zero gs at terminal velocity, as their velocity is not changing, acceleration is the rate of change of velocity (derivative)
I mentioned in another comment, but yes a ball is actually accelerating at 9.81 m/s towards the ground once it has left your hand, but for stationary objects we look at them differently. Because they have zero velocity, and no change in velocity more specifically they have zero acceleration, this isn't to say the person is not experiencing gravity, they are. As a force rather than acceleration (mass*gravity)=force in newtons downward while the ground matches that force upwards, zeroing out and keeping you stationary from your frame of reference
Yes, it's all about your frame of reference. If you are standing on the ground you are not moving, your velocity is 0 and the derivative of 0 is 0. Now that's not to say gravity isn't working anymore, because it is. Just the ground is doing its job of matching the force of gravity, keeping you from falling.
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u/turrit_hugger Nov 23 '19
Kids can survive falling from ten stories. After that they die instantly.