Net Force on a Crash Dummy's Head During Automobile Collision
What is the HIC in this collision?
Express your answer in seconds.
Answer:
The HIC in this collision will be 1108.05 seconds.
The head injury criterion (HIC) is a measure used to assess the likelihood of head injuries resulting from various collisions. An HIC greater than 1000 seconds indicates a high risk of severe injuries or even death.
The average acceleration during the collision can be calculated as:
= Force / Mass
= 2000 Newton / 4.5 kg
= 444.44 meters per second squared
The time difference during the collision is:
Change in time = 100 milliseconds - 20 milliseconds
= 80,000 seconds
Using the HIC formula: HIC = (444.44 m/s² / 9.8 m/s²)^2.5 * 80,000 s
This results in an HIC of 1108.05 seconds.