A driver wearing a seatbelt decelerates at roughly the samerate as the car itsel

Question

A driver wearing a seatbelt decelerates at roughly the samerate as the car itself. Since modern cars have a "crumple zone"built into the front of the car, the car will decelerate over adistance of roughly 1.0 . Find the net force acting on a 69- driverwho is decelerated from 22 to rest in a distance of 1.0 .
A driver wearing a seatbelt decelerates at roughly the samerate as the car itself. Since modern cars have a "crumple zone"built into the front of the car, the car will decelerate over adistance of roughly 1.0 . Find the net force acting on a 69- driverwho is decelerated from 22 to rest in a distance of 1.0 .

Explanation / Answer

The deceleration is      a =v2-u2/2x         =0-(22m/s2)2/2(1.0-0)          =----------- the force acting is       F = ma           =69kg*a            =-------------

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