Difficult to answer: There are too many potential variables to give an answer that would be useful. However - most experts consider it to be a concussion if a head injury is associated with an immediate alteration in consciousness. That is either being "knocked out" or dazed or confused. Hope that helps.
Answered 2/5/2018
4.8k views
Not a helpful concep: Force is only one factor in concussion. Others are the direction of the blow, the rotation of the head on neck, susceptability of the individual.
Answered 2/5/2018
2.8k views
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