Traumatic Head Injury Traumatic Brain Injury Such As Concussion Results When The Head Undergoes A Very Large Acceleration?

Traumatic brain injury such as concussion results when the head undergoes a very large acceleration? - traumatic head injury

Head injury and a concussion results when the head undergoes a significant acceleration?
In general, an acceleration of less than 800 m/s2 sustained for long periods will not cause injury, then an acceleration of more than 1000 m / s 2 for at least 1 ms can cause injury. Suppose that is a Rolls child from a bed, 0.44 m above the ground. If the floor is made of wood, is the head of the child brought in about 1.9 mm rest. If the floor is carpeted, the braking distance increases to about 1.2 cm. Calculate the amount and duration of the downturn in both cases to determine the risk of injury. Let us assume that the child in the fall to the floor remains horizontal. Note that to be a hard case on your head speed is higher or lower speed is calculated, could

Parquet ______ ms duration magnitude______ m/s2

Carpet ______ ms duration magnitude_______m/s2


I have yet to ... I know, get like wood and carpets scale


First, the speed ofthe child just before impact:

d =. 5 * g * t ^ 2
t = sqrt (2 *. 44/9.81)
=. 3 sec

Speed = g * t
= 9.81 *. 3
= 2.94 m / s

Hardwood

The delay distance
d =. 5 * A * T ^ 2
=. 0019 5 * A * T ^ 2
one =. 0038 / t ^ 2
Average speed
v =. 5 * A * T
=. 5 * 2.94
= 1.47
a = 2,94 / t

With the equations set
2,94 / t =. 0038 / t ^ 2
t =. 0038/2.94
= 1.3 ms
one =_____ m / s ^ 2

Hardwood bad

Rugs

The average speed remains the same
a = 2,94 / t

Delay
one =. 0248 / t ^ 2

Once the solution for both
t =. 0248/2.94
= 8.4 ms
one =_____ m / s ^ 2

Carpet = no trauma.

Thanks