Acceleration is sometimes expressed in multiples of g, where g=9.8m/s^2 is the acceleration due to Earth's gravity. In a car crash, the car's velocity changes from 32m/s to 0m/s in 0.15s In terms of g, what is the average acceleration of the car during the crash?

By the way. Technically it should be NEGATIVE because the car is DECELERATING. But your book isn't making that distinction. So, just go with the absolute value, which is 21.77, which rounds off to 22.

May 17th, 2015

If you don't give the choices, then you have to at least tell the person to round the answer to the nearest whole number. My answer was 100% correct. If I was told to round off the answer, then I would have said 22g.