Calculate the force needed to bring a 900 kg car to rest from a speed of 90.0 km/h in a distance of 110 m (a fairly typical distance for a nonpanic stop). N (b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car and compare it with the force found in part (a), i.e. find the ratio of the force in part(b) to the force in part(a).

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