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Physics 24 Online
AnxiTEA:

If a person gets hit on their hand with a broken hair tie, at 40 mph, and it doesn't hurt. What's wrong with them?

MxxnLight:

Details types of injuries to the fingers, hands, and wrists. ... At one time or another, everyone has had a minor injury to a finger, hand, or wrist that caused pain or swelling. Most of ... The risk of finger, hand, or wrist injury is higher in contact sports, such as wrestling, football, ... Broken bones (fractures), such as a wrist fracture.

tcanpanda1205:

Broken hand - Symptoms and causes - Mayo Clinic

MxxnLight:

HealthLink BCwww.healthlinkbc.ca ~ Info found.

tcanpanda1205:

lol

darkknight:

well thats not the way physics works, you have to take a lot of stuff into account. I am assuming you want to calculate hte force that was exerted on them when u hit them, so force = mass * acceleration, force = impulse/time there r a number of factors y something doesnt hurt, for example if a bullet comes at you so slow that it takes literally 2 min making contact, it would barely hurt. Whereas a regular bullet would hurt bad or kill

darkknight:

or maybe the hair tie has no mass, or something like that, it can slow down over time as well 40mph as it leaves ur hand or as it hits them? some stuff to consider

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