Hi,

I am doing some home work and having problems with this. The teacher did not cover it well and the book that we are doing the homework from does not help at all.

The question is a car decelerates at 250 m/ss during an accident, the car was going 96 km/hr at impact, over what distance must an airbag stop a person in order to survive the crash.

so:

a= -250 t dt

v= 96km/hr X 3.6 = 345.6 m/s

a(t) = -250t dt

v(t) = -250t dt

vt = -125t^2 + C

345.6 = -125(0)^2 + C

c = 345.6

Do I have correct? I have no clue I know you go from accel to velocity then velocity to displacement.

Any help would be great, thanks.