- #1
-sandro-
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Homework Statement
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.
Homework Equations
Vf2= Vi2+ 2ad
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?