Answer:
a) The severity index (SI) is 3047.749, b) The injured travels 0.345 meters during the collision.
Explanation:
a) The g-multiple of the acceleration, that is, a ratio of the person's acceleration to gravitational acceleration, is:
The time taken for the injured to accelerate to final speed is given by this formula under the assumption of constant acceleration:
Where:
- Initial speed, measured in meters per second.
- Final speed, measured in meter per second.
- Acceleration, measured in
.
- Time, measured in seconds.
Lastly, the severity index is now determined:
b) The initial and final speed of the injured are and
, respectively. The travelled distance can be determined from this equation of motion:
Where is the travelled distance, measured in meters.
.