1. The problem statement, all variables and given/known data A man jumps from a building into a safety net located at 11m below, that acts like a rigid body when the man hits it. Find the speed. The safety net moving 1.5m meters down stops the man completely. Find the deceleration, assumed as constant. 2. Relevant equations Vf2= Vi2+ 2ad 3. The attempt at a solution This problem is really simple but I'm not sure about the deceleration that seems too high. I found the speed at 11m (when the man hits the net) of 14.68m/s. For the other question I set the final velocity at 0m/s, the initial velocity at 14.68m/s, distance 1.5m and I solved for a and I got a (negative) acceleration of 71.34m/s2. Isn't this too high? I tried to find the time with this deceleration to see if I get the given distance but it just won't work. What do you think?