[Request] How fast would rock have to be travelling to penetrate a MOVING window like this?

Translation of text from image from Danish activist Rasmus Malvers Facebook post.

Is there a physicist who can help with the formula for mass and velocity, for a stone to go through a safety window on a train that is going "sideways" in relation to the throw? I don't think it has landed where it is in the photo, but it is still impressive. What are the chances of throwing a stone of that size *through* such a window? I think it may have hit the edge of the glass, but that doesn't explain how it has gone through plastic foils and several layers of glass.

Ps first post here, sorry if I missed something essential!

u/revokedimmunity — 1 month ago

Tanker går ud til det arbejdende folk

Også dem som arbejder i weekenden…(og tirsdag-fredag).

u/revokedimmunity — 1 month ago

Migmig skabelon - lad mig se jeres remix

Fandt det på det forbudte SoMe. Den var meje politisk. Kan vi remixe uden for meget politik?

u/revokedimmunity — 1 month ago