[Q] Material Question

[inspiurd]

Is there a material out there that is flexible, and does not break when stretched at a slow rate; but stiffens up quickly and breaks easily at higher rates of speed?

 

I was thinking of putty - but something that resembled more of a rubber band?

 

Just curious.

[Eclogite]

A popular material in the 60s with schoolchildren was 'magic putty'. When you squeezed it gently it behaved like plasticine. When you hit it with a hammer it shattered.