🍹Early to RISA 🧉@sh.itjust.worksM to Greentext@sh.itjust.works · 4 days agoAnon misses a hintsh.itjust.worksimagemessage-square18fedilinkarrow-up1407arrow-down117
arrow-up1390arrow-down1imageAnon misses a hintsh.itjust.works🍹Early to RISA 🧉@sh.itjust.worksM to Greentext@sh.itjust.works · 4 days agomessage-square18fedilink
minus-squareLostXOR@fedia.iolinkfedilinkarrow-up51·4 days agoThe bullet weighs 10 grams and has a velocity of 330 m/s. It hits Anon in his 5 kg head and, because it’s a rubber bullet, bounces off elastically. How fast is Anon’s head moving after the collision?
minus-squareBeeDemocracy@sh.itjust.workslinkfedilinkarrow-up4·3 days agoDepends, how stiff is his neck?
minus-squareLostXOR@fedia.iolinkfedilinkarrow-up33·4 days agoNot quite, remember it’s an elastic collision.
The bullet weighs 10 grams and has a velocity of 330 m/s. It hits Anon in his 5 kg head and, because it’s a rubber bullet, bounces off elastically. How fast is Anon’s head moving after the collision?
Depends, how stiff is his neck?
0.66 m/s ?
Not quite, remember it’s an elastic collision.
Ah, 1.317 m/s then.