G forces

Calculate car deceleration (as a multiple of gravitational acceleration g = 9.81 m/s2) when a vehicle in a frontal collision slows down uniformly from a speed 111 km/h to 0 km/h in a 1.2 meters trajectory.

Correct answer:

G =  40.4 g

Step-by-step explanation:

s=21at2=1.2 m 2s=at2  a=ΔtΔv  v=at=t2s=111 km/h=30.833 m/s  t=v2s=30.83321.2=0.0778378 s a=v/t=30.833/0.0778378=396.123 m/s2 G=a/g=40.4 g

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