What materials can absorb impact from a 3-story drop?

[tenacity2986]

What are the properties of acrylic? I am building an acrylic robot that is hollow and shaped as a ball and needs to be able to absorb an impact from a 3 story building ( 20 foot drop)... It can be covered in some polymer or other material. Anyone know of any materials that can absorb the impact?

 

[Mech_Engineer]

You can look up material properties on this website: www.matweb.com

If it looks like acrylic might not fit the bill you should look into using Lexan, which is some very tough stuff. Link: Difference between Lexan and Acrylic (Plexiglass).