A car traveling at 100 km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.85 m . What was the magnitude of the average acceleration of the driver during the collision? Express the answer in terms of "g's," where 1.00 g = 9.80 m/s2.

Answer 1

v initial = 100000 m / 3600 s

v final = 0

v ave = (vi + vf) / 2

time = .85 m / (v ave)

accel = vi / time