PRACTICE ANOTHER Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Ge

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Practice Another Traumatic Brain Injury Such As Concussion Results When The Head Undergoes A Very Large Acceleration Ge 1 (18.77 KiB) Viewed 29 times

Practice Another Traumatic Brain Injury Such As Concussion Results When The Head Undergoes A Very Large Acceleration Ge 2 (16.6 KiB) Viewed 29 times

PRACTICE ANOTHER Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Generally, an acceleration less than 800 m/s2 testing for any length of time will not cause injury, whereas an acceleration greater than 1,000 m/s2 lasting for at least 1 ms will cause injury. Suppose a small childroits off a bed that is 0.55 m above the Hoor If the floor is hardwood, the child's head is brought to rest in approximately 2.1 mm. If the floor is carpeted, this stopping distance is increased to about 1.4 cm. Calculate the magnitude and duration of the deceleration in both cases, to determine the risk of injury. Assume the child remains horizontal during the fall to the floor Note that a more complicated fall could result in a head velocity greater or less than the speed you calculate. hardwood floor magnitude m/s? hardwood floor duration ms carpeted floor magnitude carpeted or duration ms my?
DETAILS SERCP11 2.3.P.042 MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The kinematic equations can describe phenomena other than motion through space and time. Suppose x represents a person's bank account balance. The units of x would be dollars (5) and velocity v would give the rate at which the balance changes in units of, for example, $/month). Acceleration would give the rate at which w changes. Suppose a person begins with three thousand dollars in the bank. Initial money management leads to no net change in the account balance so that vo-0. Unfortunately, management worsens over time so that a = -3.57 102 $/month? Assuming is constant, find the amount of time in months until the bank account is empty. HINT months