Yes. I'm ignoring the complexities that acceleration throws in. The simple point is that a jump partially cancels the impact velocity.The resultant forces aren't zero. At the bottom apex, the jumper experiences maximum upwards acceleration. The velocity is zero at the apex though.
Yes, but how did you manage to stumble across it in the first place? You must have had a LOT of free time at work to go through hundreds of posts to get to that one.If that is directed toward me ... no I did not get caught in a GR times dilation .... I was on my computer at work and did not have my spectacles with me ... so did not notice the date.