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Rate of deceleration

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An automobile traveling 68 MPH strikes a bridge abutment. Due to crumpling of the front of the car, its occupants undergo 29 inches of constant deceleration distance. Estimate the rate of deceleration, in ft/s2, that the occupants of the car will experience. State your answer rounded to the nearest ft/s2. (Note: 60 MPH = 88 ft/s).

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The solution provides explanations on how to find out the rate of acceleration based on the known distance traveled, final velocity and initial velocity.

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2as=Vf^2-Vi^2, in this formula: a is the ...

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